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Posted: 12/20/2010 8:59:25 AM EDT
[Last Edit: RTUtah]
Originally Posted By PSYWAR1-0:

The Recce platform was something that sprung up within the NSW and 5th SFG communities that first became the Special Purpose Receiver built by Crane, which was supposed to be installed on any M4 lower. After a time when the perfect storm of the users wanting a match-grade trigger and the bolt-bounce issue was identified, the Special Purpose Receiver morphed into a complete rifle that was type-classified as the Mk12.  

Mk12: A BRIEF HISTORY (as authored by "LGT" & "FL")

Mk12 Special Purpose Rifle (SPR)

Scoped versions of the M16 rifle existed as far back as the 1960s. Like nearly all historic military rifles, the M16 went through decades of efforts to improve its accuracy, both in the military and civilian marksmanship communities.

The need for the SPR dates back to the late 1980s and early 1990s when the 7.62mm M21 sniper rifle, a semi-automatic weapon of Vietnam vintage, was replaced by the M24 sniper rifle, a bolt action weapon. The M24 was originally specified to be a .300 Winchester Magnum, but the Army decided to field it in 7.62 NATO for a variety of economic reasons. This left the M24 in the unenviable position of being the worst of both worlds in the eyes of snipers at the time, since it lost the fast-shooing, semiautomatic capability of the M21, but did not gain the range advantage of the .300WM. This compromise left a vacant requirement for a fast-shooting semi-automatic sniper rifle. This need was most apparent in the US Army Special Forces (SF) community, since the other commands within the Special Operations Forces structure filled that need with Knights Armament Corporation's SR-25 sniper rifle.

Army SF, being prohibited by its leadership from procuring the SR-25, sought the next best alternative, namely a Special Purpose Receiver (SPR) kit to convert the Army SF M4 carbines into highly accurate rifles. In late 1998, at the request of SFC Steve Holland of 5th Special Forces Group, and the approval of the SOPMOD joint IPT, the Special Operations Peculiar Modifications (SOPMOD) Program Manager, Troy Smith, authorized the purchase of 5 sets of commercial items as an SPR experiment.

The original requirement was for USASOC, mainly the SF Groups, as WARCOM had the MK11, 7.62mm system. Once the SPR requirement was developed and demonstrated through experimentation, most of the other commands in USSOCOM added themselves to the Basis of Issue Plan (BOIP). The USSOCOM requirement for the SPR, with improved ammunition, was approved in July 1999, as part of the SOPMOD Kit, Operational Requirements Document, Version 5 (ORD 5).  

Further initial development included several variants of the SPR and new ammunition that were compatible with the M4 carbine's lower receiver. It was found that standard issue M855 5.56mm ammunition was not consistent enough to meet the requirement. In 2000, based on an upgrade requirement to provide a match-grade trigger to the design, Mr. Paul Miller, the SPR project manager, discovered an opportunity to pick through over 15,000 M16A1s that had been sent to Crane for destruction. Realizing that these M16A1 rifles, some of which were virtually new, could be used as "free lumber" to build full SPR weapons, Paul selected several thousand rifles to be set aside for the new SPR project. The SPR underwent a minor but significant name change, with the R having originally stood for "Receiver" now standing for "Rifle"

The new weapon system was worthless without a matching round of ammunition to obtain the performance required. The PEO-SP USSOCOM authorized the new round that became Mk262 as part of the Mk12 system in August 2000. Paul Miller and his SPR team refined the 77-grain prototype ammunition and built approximately 124 SPR Rifles in the summer of 2001. These were finished just in time to ship out to Army SF in late October 2001, to be used in the first invasion of Afghanistan. The SPR rifles were extremely well-received, and the SOF combat units ordered hundreds more.  

In May 2002, USSOCOM removed the Mk12 and other complete weapons projects from the SOPMOD Program and placed them under the newly-formed USSOCOM Weapons Program. The fielded weapons included two versions (Mk12 Special Purpose Rifle Mod0 and Mod1). Fielding has since been structured for Mk12 Mod1 Special Purpose Rifle only. This rifle is used by Joint USSOCOM Commands and the USMC in combination with M262 (AA53, 77 grain) ammunition. Formal fielding of the full-rate production version of the Mk12 rifle and ammunition occurred in May 2003 and was completed in FY '04.  

In 2012, as the decade of war on terrorism was winding down and the SCAR weapon system began replacing the requirement for the Mk12, USSOCOM and Naval Special Warfare divested themselves of the Mk12 weapons system, and the Mk12 is now being looked at to fill a Designated Marksman Role within Brown Water Navy commands.
View Quote

* * * * * * * * * *

The following parts lists and substitution parts was compiled by lancecriminal86 over the course of a LOT of research. Read up and pay attention!

Below are the 100% .mil-spec parts lists to build a true SPR or Mk12 clone. Some of these parts are no longer manufactured and will require much effort and money to locate through forums and online brokers. Keep in mind the rifles were built off donor M16A1s, hence the prevalent A1 parts in the lower receivers and the BCGs. They were also first configured using parts available from 1998-2004, and most are inferior in some ways to newer designs. If this bothers you too much, STOP NOW.

The rifles were issued as a kit in a Pelican 1700 case with cutouts. The kits included the rifle with suppressor, optic, bipod, an Eagle TAS-1 UMSS sling (unobtanium and also absolute crap), with a Dewey 1-piece cleaning rod plus Otis cleaning kit, and a cutout for magazines. An operator's manual was also included, however these have not been officially released for public consumption. However, the manuals are out there, and some companies building Mk12 uppers include one. Whether these are official .mil operator's manuals or specially made is currently unclear as the manual itself still contains language that it is not for distribution.

- Alternate .mil-spec parts due to NFA, NLA parts, or changes in name/markings for current production in [brackets]

- Extra notes about parts or availability are in (parenthesis)

LOWER
Lower receivers were standard across the SPR/Mk12 variants and the only variations would be between grips, stocks, and buffers. Most were marked either Colt or GM Hydramatic. All other parts were the same in regards to the lower parts. One caveat is the trigger, as the program originally selected the Knight's Armament 2-stage Full Auto Match trigger. Later on, some issues regarding negligent discharges occurred, and Geissele SSF triggers ultimately found their way into the Mk12 family. Whether 100% of all Mk12s eventually received the Geissele trigger isn't clear, so either is acceptable.
  • Lower: M16A1 pattern [Nodak Spud NDSA1 or 80% re-profiled/finished/engraved]
  • Trigger: Knight's 2-Stage Full Auto Match Trigger or Geissele SSF [KAC semi-auto Match or Geissele SSA/SSA-E]
  • Grip: A1, A2, ERGO Original
  • Stock: Originally issued with A1 stocks, both solid D and trapdoor E types; as A1 stocks dwindled, A2 were used; ModH rifles rebuilt with Ace SOCOM stocks
  • Small parts: Standard M16A1 parts

UPPER
The upper receivers, which ultimately differentiate the four variants of the Mk12, have the most variation between each other.


Early SPR/Mod0
  • Upper: Colt, Diemaco, or Armalite marked, flat top, M4 feed-ramps
  • Barrel: Douglas 416r SS, 18" SPR contour, 1/7 twist, flats milled for PRi FSB (Compass Lake, Centurion Arms, High Caliber Sales, and PRi can all supply barrels that meet the appropriate spec minus FSB flats)
  • BCG: Colt M-16
  • Handguard: Precision Reflex Gen I carbon fiber free-float Handguard, rifle length (identified by button-head screws and one vent hole near barrel nut on lower half; no heat shields)
  • A.R.M.S. #38 SPR MOD Sleeve (either the PEQ version or with uneven spacing on the front  but not the full 1913 railed version)
  • FSB: PRi early folding front sight base and gas manifold, set-screw, with elevation wheel
  • Charging handle: PRi Gas Buster M-84 with military latch
  • Muzzle device: OPS Inc 12th Model brake/collar, and 12th Model suppressor [Allen Engineering AEM5 and brake/collar]
  • Rear iron sight: A.R.M.S. #40
  • Scope rings: A.R.M.S. #22 Medium rings, #22 Tactical Ring Cap and #22 Tactical Ring Rail (rings should not include "lever-stop" hump as produced later by A.R.M.S.)
  • Optic: Leupold Vari-X III 3.5-10x40mm LR, M3 turrets, illuminated Mil-Dot reticle (use .308 turret) [Leupold LR/T 3.5-10x40 LR, M3 turrets, Illuminated Mil-Dot reticle]
  • Bipod: Versa-Pod with A.R.M.S. #42, or a Harris with A.R.M.S. #32 (Versa-Pod far inferior to Harris)
Late Mod0
  • Upper: Colt or Diemaco marked, flat top, M4 feed-ramps
  • Barrel: Douglas 416r SS, 18" SPR contour, 1/7 twist, flats milled for PRi FSB (Compass Lake, Centurion Arms, High Caliber Sales, and PRi can all supply barrels that meet the appropriate spec minus FSB flats)
  • BCG: Colt M-16.
  • Handguard: Precision Reflex Gen III carbon fiber free-float handguard, rifle length
  • A.R.M.S. #38 SPR-PEQ-2-3 Sleeve
  • FSB: PRi folding FSB, set-screw, .750 (original production had PRi's full address engraved on sight tower; those engraved with "PRi USA" are later manufacture)
  • Charging handle: PRi Gas Buster M-84 with military latch
  • Muzzle device: OPS Inc. 12th Model brake/collar, and 12th Model suppressor [Allen Engineering AEM5 and brake/collar]
  • Rear iron sight: A.R.M.S. #40
  • Scope Rings: A.R.M.S. #22 Medium rings (rings should not include "lever-stop" hump as produced later by A.R.M.S.)
  • Optic: Leupold 3-9x36mm TS-30, Mk4 MR/T 2.5-8x36mm TS-30A2, M2 turrets with Mk262 BDC, illuminated TMR reticle
  • Bipod: Harris with either A.R.M.S. #32 or KAC RAS bipod adapter
SPR/A, SPR/B, Mod1
  • Upper: Colt or Diemaco marked, flat top, M4 feed-ramps
  • Barrel: Douglas 416r SS, 18" SPR contour, 1/7 twist, flats milled for PRi FSB (Compass Lake, Centurion Arms, High Caliber Sales, and PRi can all supply barrels that meet the appropriate spec minus FSB flats)
  • BCG: Colt M-16
  • Handguard: Knight's Armament M4 Match FF RAS, rifle length (now called the SR15/16 Match FF RAS)
  • Gas block: NSWC Crane pattern (Badger Ordnance parkerized/NSN version is correct, has open front of gas tube hole)
  • Charging handle: PRi Gas Buster M-84 with military latch
  • Muzzle device: OPS Inc. 12th Model brake/collar, and 12th Model suppressor [Allen Engineering AEM5 and brake/collar]
  • Scope rings: A.R.M.S. #22 High rings (A.R.M.S. rings should not include "lever-stop" hump as produced later by A.R.M.S.)
  • Optic: Leupold Mk4 MR/T 2.5-8x36mm TS-30A2, M2 turrets with Mk262 BDC, illuminated TMR reticle or NightForce 2.5-10x24 (optionally with NightForce rings)
  • Bipod: Harris with KAC RAS bipod adapter (BRM-S, A.R.M.S. #32 could still optionally be used)

ModH, Mod "Holland"

  • Upper: Colt or Diemaco marked, flat top, M4 feed-ramps
  • Barrel: Noveske 16" Recon, mid-length gas system, profiled for OPS Inc. 12th Model brake/collar (will require aftermarket contouring of most barrels)
  • BCG: Colt M-16
  • Handguard: Precision Reflex Gen III carbon fiber free-float handguard, FDE, rifle length
  • Charging handle: PRi Gas Buster M-84 with military latch
  • Muzzle Device: OPS. Inc. 12th Model brake/collar, and 12th Model suppressor [Allen Engineering AEM5 and brake/collar]
  • Scope Rings: A.R.M.S. #22 Medium rings on PRi recce rail (rings should not include "lever-stop" hump as produced later by A.R.M.S.) or LaRue LT-104 SPR mount
  • Optic: Leupold 3-9x36mm TS-30, Mk4 MR/T 2.5-8x36mm TS-30A2, M2 turrets with Mk262 BDC, illuminated TMR reticle, Leupold Vari-X III 3.5-10x40mm LR, M3 turrets, illuminated Mil-Dot reticle (use .308 turret) [Leupold LR/T 3.5-10x40mm LR, M3 turrets, illuminated Mil-Dot reticle]; S&B Short-Dot
  • Bipod: Harris with either A.R.M.S. #32 or KAC RAS bipod adapter
  • Iron sights: (apparently PRI were supplied but never used)

In the Wild
Naturally, once these rifles were issued to units, operators and even Marines used various non-issued parts. Here is a short summary of what has been seen:

Early SPR/Mod0:
Both Leupold 3.5-10x40mm and 3-9x36mm scopes have been used. Many have had carbine stocks like the old CAR-style, enhanced M4, SOPMOD Gen I, or even the Tactical DuoStock swapped on.

Mod1:
One 3rd SFG-issued rifle pictured with SSgt Robert J. Miller (MoH recipient) used an A.R.M.S #36 S-EX 5.56mm rail, and a Leupold M3X 10x fixed-power scope, possibly pulled from an M-24 or SR-25 rifle. Another has been seen with a Magpul PRS, LaRue mount, and a Premier Reticles 3-15x used by an AMU shooter, and a similar rifle was pictured on a FOB in a very posed-looking photo. Further, a USMC-issued Mod1 was seen using #22 Medium rings instead of High rings, and a LaRue mount has been spotted as well. Grips have varied from the usual A1, A2, and ERGO, and at least one Magpul MIAD has been used. As with the Mod0s, carbine stocks like the SOPMOD and M4 have been used on Mod1s.

ModH:
The Mod "Holland" was already a small-batch configuration, but even as soon as they were issued to 5th SFG units, some Ace SOCOM stocks were replaced with Magpul ACS and CTR stocks. Optics are basically anything existing in the unit's inventory, from S&B ShortDots still in the system, the 3-9x and 3.5-10x Leupold scopes from earlier Mod0s, and there's even a photo of an ELCAN on a Mod1 floating around. No non-magnified optics like EOTechs or regular Aimpoint M2/M4s, but Micros have been seen on offset mounts. Backup iron sights, as a whole, were almost entirely left unmounted. Grips were again the same usual selection.


Parts Alternatives for Clone Building
Many parts are rare, expensive, and/or both. Despite this, there are some alternatives to a 100% pure clone that will still provide the same visual look and performance. While not a museum-grade clone, most would be hard-pressed to discern the difference. Just know there are those of us out there that will haze and peer-pressure you into further moving your build towards a true clone.

Barrel:
Popular options are the White Oak Armament SPR barrel (rifle gas), BCM's SPR barrel, Rainier's Match and Ultramatch offerings (ensure it's the SPR contour with 12th Model profile), Ballistic Advantage's SPR barrel. Compass Lake Engineering can also spin a Mk12 profiled barrel with a Criterion chrome-lined blank, or even a Krieger, which was one of the original contenders for the program. The DPMS Mk12 barrels are NOT properly profiled for a clone.

Optics & Rings:
In the case of the Leupold 3-9x or 3.5-10x, it's generally okay to go for a non-illuminated version of either, sometimes with M1 or other turrets and reticles. As far as the NightForce scope, the 2.5-10x24mm is not generally released to the public anymore (with one recent exception through Sniper's Hide), so many use the 32mm or even 42mm versions with the #22 High rings. As for the rings, any of the recent produced A.R.M.S. #22s with the lever-stop humps are functionally the same, the desire for non-lever-stops is purely aesthetic when going for the most authentic look. As LaRue LT-104s have been seen in use, it is justifiable to use one depending on whether you have a specific rifle you want to copy, or even just if you absolutely cannot acquire #22 High rings.

A.R.M.S. #38 SWAN Sleeve:
The #38 family of sleeves are no longer available. Finding them secondhand usually cost $250-$300 easy, more for rarer early variants. Fortunately, PRi's copies of the sleeves look and function almost identically, with minor visual differences. PRi and other builders supply these currently for complete Mod0 builds.

FSB:
While the set-screw version of PRi's FSB is spec, most use the cross-bolt, clamp-style version. They are extremely robust, and when aligned and torqued, have been shown to hold strong enough that you'll probably shear your barrel extension pin or upper before it budges. This is mainly how Mod0 uppers are supplied by most vendors, including PRi themselves.

Suppressor, Brake/Collar:
Diverging from the OPS Inc. or AEM brake and collar will get you MAJOR flak. Trust me, I've been running an AAC SPR/M4 for years now and it took a LONG time to not get clubbed every time I posted it. The Allen Engineering AEM5 is basically the current production of the OPS Inc. 12th Model, as they were originally made by Ron Allen and his team in the first place. Only minor differences separate original OPS Inc. cans from AE cans, and these are only obvious to trained eyes.

As far as the rest, you can swap Colt parts out for any other .mil-spec parts, like BCM, DD, CMT, etc. Any billet uppers/lowers, funky BCG coatings, extended bolt releases, etc. are extremely frowned upon. Remember, once you start going down the path of building a "better" rifle rather than what was spec, you're quickly beyond clone territory and would have been better off building a custom 16" or 20" rifle. Cloning is generally viewed as all-in or not at all.


* * * * * * * * * *

Complete Mk12 Mod0 / Mod1 Uppers
Bravo Company Manufacturing
High Caliber Sales
Precision Reflex Inc.


Specific Mk12 Tech
Augee's side-by-side comparison of the original ARMS SWAN Sleeve and PRI reproduction PEQ Sleeves: bottom of p136
KOBK's side-by-side comparison of PRI Gen I, II, and III handguards, and Gen I and Gen II FSBs, and SWANs: middle of p137
Augee's Mod1 gas block tech: top half of p357
Glass1's Early Mod0 photo breakdown: middle of p449
tamboi's Leupold Vari-X, TS30, and TS30A2 scope history/lineage, and part numbers, p.792


* * * * * * * * * *

As of 16 May 2024, Ron Allen is still making custom parts for his suppressors:
Originally Posted By k31user:

I still make custom stuff.
1-530-742-3248
[email protected]

RonA
View Quote

* * * * * * * * * *


Attachment Attached File

Link Posted: 3/17/2017 9:44:30 AM EDT
[#1]
Wasn't loose, wobbly, no full-auto, rapid fire.


Best guess is that one of the old M855/SS109 rounds in my ammo can did it. That's the only thing that was different really. Usually it's just IMI and Federal 223.
Link Posted: 3/17/2017 10:39:34 AM EDT
[#2]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By HaveBlue83:
it musta shot loose and got wobbly. somewhere i heard that ops cans do that. so, did it?

ive had 3 endcap strikes since 2012 on my 5.56 can. 2 needed service. its always shitty to see. it makes me want a .30 aem5 if i did it. 
View Quote
I've had the opposite experience with mine, my AEM5 cinches on tight and requires a little bit of effort to unscrew.

-Kirby
Link Posted: 3/17/2017 12:01:29 PM EDT
[#3]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ArmedFerret:
I'm still waiting for mine to ship to my xfer dealer.  
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ArmedFerret:
Originally Posted By Regulatori:

Waiting for my AEM5 is killing me.
I'm still waiting for mine to ship to my xfer dealer.  
I'm in the same boat - waiting on 2 AEM 5's.

I was told about 3 months to get the transfer to my local dealer accomplished and then the real wait will begin.
Link Posted: 3/17/2017 12:15:25 PM EDT
[#4]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By chenault:
No no lets keep this going; at this rate someone will trade me a GAP bolt action for my MRE rail.  Thank god I finished the last of my builds 6 months ago at this rate I would need a morgage.

I'm afraid the days of pushing refresh a 100 times a day to find a part may be ending and the era of deep pockets beginning.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By chenault:
Originally Posted By HaveBlue83:
spending 3 hours a day for weeks at a time to get a stock for $120 literally IS the clone game. paying $800 for a stock is funny. like me laughing at whoever paid that for a stock that can be found for 250 or less. 

i just wish people would hold off and in turn it would keep the prices inside the atmosphere. 

ithen again, i have 2500 into a rifle that i would laugh at if someone paid 2500 for an ar15. who the fuck DOES THA....oh. oh wait, this guy did that. lol. 

#clonewars
#donthatetheclonehatethegame
No no lets keep this going; at this rate someone will trade me a GAP bolt action for my MRE rail.  Thank god I finished the last of my builds 6 months ago at this rate I would need a morgage.

I'm afraid the days of pushing refresh a 100 times a day to find a part may be ending and the era of deep pockets beginning.
That's the truth! I'm happy I finished my mod 0 last year
Link Posted: 3/17/2017 12:16:45 PM EDT
[Last Edit: Dobs013] [#5]
@Haveblue - incase you were still thinking about it



Edit for 800!

Link Posted: 3/17/2017 12:26:54 PM EDT
[#6]
Has anyone done any side-by-side testing of new Black Hills Mk262 vs their re-manufactured stuff? I can't imagine there being a big difference but I haven't seen many reviews on the reman stuff.
Link Posted: 3/17/2017 12:39:26 PM EDT
[#7]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Regulatori:
This might end up on page 800 so figure I'll post a pic.

I had to do a group shot of my MK12 and my new purchase. Both are tack drivers but the M24 is on a different level. 5 shot groups look like a slightly larger ragged 45 ACP hole.

Had to add a mole skin pad because the original camo wrap was ripping out my beard.


Waiting for my AEM5 is killing me.


http://i.imgur.com/6iic1x0.jpg
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That SPR with Nightforce x24 looks so good. Bravo.
Link Posted: 3/17/2017 2:13:14 PM EDT
[#8]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By cjwwd2:
Has anyone done any side-by-side testing of new Black Hills Mk262 vs their re-manufactured stuff? I can't imagine there being a big difference but I haven't seen many reviews on the reman stuff.
View Quote
The reman stuff is not 5.56 pressure.  AFAIK.  Unless they're doing a reman Mk262 now.   But the different pressures between .223 and 5.56 may cause a difference in accuracy.   Plus, I don't think the blue box has any primer or case neck sealant.  That could cause some changes too.    Don't know if you mean 1 might shoot better than the other or not.  PLUS, this I'm not completely sure, but wasn't the Mk262 eventually changed to the Nosler 77 grain bullet?  Maybe not.  But it used to be that their Blue Box was the 77 grain Sierra bullet.
Link Posted: 3/17/2017 3:42:49 PM EDT
[#9]
PSA: Mk12 RAS back in stock at OpParts. Looks like they have 20 of them!

http://www.operationparts.com/knights-armament-long-ff-ras-mk12-mod-1/?utm_source=instocknotify&utm_medium=email&utm_campaign=instocknotify
Link Posted: 3/17/2017 3:53:32 PM EDT
[#10]
Link Posted: 3/17/2017 4:11:58 PM EDT
[#11]
Discussion ForumsJump to Quoted PostQuote History
Well done!
Link Posted: 3/17/2017 4:24:02 PM EDT
[#12]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By JJREA:


The reman stuff is not 5.56 pressure.  AFAIK.  Unless they're doing a reman Mk262 now.   But the different pressures between .223 and 5.56 may cause a difference in accuracy.   Plus, I don't think the blue box has any primer or case neck sealant.  That could cause some changes too.    Don't know if you mean 1 might shoot better than the other or not.  PLUS, this I'm not completely sure, but wasn't the Mk262 eventually changed to the Nosler 77 grain bullet?  Maybe not.  But it used to be that their Blue Box was the 77 grain Sierra bullet.
View Quote
Thanks for the info. I'm pretty sure they've stuck with the Sierra bullet though.
Link Posted: 3/17/2017 5:01:31 PM EDT
[#13]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By STXDobie:
PSA: Mk12 RAS back in stock at OpParts. Looks like they have 20 of them!

http://www.operationparts.com/knights-armament-long-ff-ras-mk12-mod-1/?utm_source=instocknotify&utm_medium=email&utm_campaign=instocknotify
View Quote
Annnnd they're gone. Glad I snagged one while I could!
Link Posted: 3/17/2017 5:05:23 PM EDT
[#14]
Today was a good mail day at my place! One step closer and some bullets to try out.

Link Posted: 3/17/2017 5:05:36 PM EDT
[#15]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By vanquishings:


Annnnd they're gone. Glad I snagged one while I could!
View Quote
Wow, this is getting nutty. I imagine it was one or two buyers hoarding them.
Link Posted: 3/17/2017 5:06:32 PM EDT
[#16]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By vanquishings:
Today was a good mail day at my place! One step closer and some bullets to try out.

https://i.imgur.com/jpj2OdC.jpg
View Quote
So is the case in better shape than the pics appeared? Mine arrives on Monday, can't wait.
Link Posted: 3/17/2017 5:18:33 PM EDT
[Last Edit: aaron580] [#17]


Gun show finds, colt forwards, and the 99051 was less than you think

Trade it for a NICE set of NLS 22h rings!
Link Posted: 3/17/2017 5:22:46 PM EDT
[#18]
Discussion ForumsJump to Quoted PostQuote History
Wow, this is getting nutty. I imagine it was one or two buyers hoarding them.
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Discussion ForumsJump to Quoted PostQuote History
Wow, this is getting nutty. I imagine it was one or two buyers hoarding them.
Seriously. I bought one, there were 14 left. I refresh 10 minutes later outta curiousity, they're gone. My money is on someone bought 10+. They really should limit quantity per household. I know they gotta make money, but spread the love around!

Originally Posted By STXDobie:


So is the case in better shape than the pics appeared? Mine arrives on Monday, can't wait.
Well, I wouldn't say the "case" is, persay. It's beat to shit. But that's what makes it cool to me.

The FOAM on the other hand, is exceptional. One small tear on the lower receiver cut out, but that's it. Some discoloration, but it looks great. I'll load it up later tonight with all my gear to see how it handles. Thankfully, the foam isn't glued in or anything crazy. I plan on taking it to a local foam place and seeing if I give them a prototype, they could replicate it, and how much it'd cost.

Would be nice to be able to just have a few extra foam cut outs laying around! Especially if I can get it done for cheap. Maybe that's just wishful thinking, though. It would be the first cheap Mk12 thing I've encountered yet. :P
Link Posted: 3/17/2017 5:39:17 PM EDT
[Last Edit: tamboi] [#19]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By lancecriminal86:
Who sees what's wrong with this picture?

https://c1.staticflickr.com/4/3755/33330554102_da1f2f10de_o.jpgEndcap by LanceCriminal86, on Flickr
View Quote
Damn, I don't like seeing that at all, even if it seems minor. Obviously everything was tight, the collar, brake. I find it difficult to think the cause was an old  surplus round, you should give Allen a call and ask him his thoughts.
Link Posted: 3/17/2017 6:15:43 PM EDT
[#20]
PICS! You heathens....

(For page 800)



Link Posted: 3/17/2017 6:29:55 PM EDT
[#21]
Link Posted: 3/17/2017 6:50:56 PM EDT
[Last Edit: Lurp06x] [#22]
Pics for page 800!


Here's s 5 round group I shot today testing some hunting ammo for coyotes. This was federal fusion 62gr. Just weird that it shot 2.5" lower than 77gr otm.
Link Posted: 3/17/2017 6:56:45 PM EDT
[Last Edit: RTUtah] [#23]
Link Posted: 3/17/2017 7:15:03 PM EDT
[#24]
Link Posted: 3/17/2017 7:46:37 PM EDT
[#25]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By mrsaturn7085:
Good luck everyone else...

Gen 1 ACE SOCOM

...I ducked out once it hit $800.
View Quote
I texted my buddy to tell him what his stock might be worth now!  But sadly for him it was just the skeleton stock and not the SOCOM.
Link Posted: 3/17/2017 7:49:53 PM EDT
[#26]

Pic for 800!
Hopefully have it back together next week.
Link Posted: 3/17/2017 7:55:50 PM EDT
[#27]


800 kit action
Link Posted: 3/17/2017 8:26:31 PM EDT
[#28]
15% off at Ballistic Advantage. God give me the strength to not buy a Holland barrel....
Link Posted: 3/17/2017 8:29:31 PM EDT
[#29]
I started my MOD 1 a while ago thinking hey I'll get the rail sooner or later but later never happened. I think it is pretty close but I deviated with the optic and mount. Now I am going to have to go with a set of 1.375 Rings to allow my PVS-22 to mount up. I was leaning to the x24 scope but opted for the x42 now I am really rethinking it.

I ordered the AEM5 so I will wait to paint her up.






Link Posted: 3/17/2017 8:36:48 PM EDT
[Last Edit: mrsaturn7085] [#30]
Originally Posted By cjwwd2:


Thanks for the info. I'm pretty sure they've stuck with the Sierra bullet though.
View Quote
The (very early) change was from Sierra 77 gr. to Sierra 77 gr. w/cannelure, IIRC.
Link Posted: 3/17/2017 9:04:51 PM EDT
[#31]
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Originally Posted By Lurp06x:
Pics for page 800!
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0814_zpsjpy6t5yr.jpg?w=480&h=480&fit=clip

Here's s 5 round group I shot today testing some hunting ammo for coyotes. This was federal fusion 62gr. Just weird that it shot 2.5" lower than 77gr otm.
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0812_zps1rf4urov.jpg?w=480&h=480&fit=clip
View Quote
Chrono the velocity of that Federal fusion, and that will give you your answer, probably not anything near what advertised. Also Litz did a nice article on how barrel twist can also effect actual velocity based in bullet weight.
Link Posted: 3/17/2017 10:03:00 PM EDT
[Last Edit: TinyCrumb] [#32]
Andrew and I's SPRs for 800.



Link Posted: 3/17/2017 10:39:52 PM EDT
[Last Edit: JJREA] [#33]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By cjwwd2:


Thanks for the info. I'm pretty sure they've stuck with the Sierra bullet though.
View Quote
Yeah,  I'm not quite so sure about that.  You're probably right.  But I was doing a google and found this article and has some interesting things to say.  I'm not sure what's all true but it brought up another difference I forgot to say and that's the cannelure.  I don't think blue box has a cannelure but Mk262 does now.   The article made it seem like it was still the Sierra bullet.  I'm not sure why I thought they changed to the Nosler.  

http://www.shootingtimes.com/ammo/special-forces-to-civilians-black-hills-mk-262-mod-1-review/

Anyways.....  My guess is people would typically see better accuracy from blue box, because of all those differences.  But since EVERY BARREL IS PREJUDICED, someone would just have to see for themselves.  You know, I don't think I've ever bought Mk262 ever.  And I think I might now......  Just for fun.  Or for HD too.  Although the TSX is probably the better choice for that now.  Except that stuff goes like over a buck a round.  Like 1.37 or something.  And really, the cannelure and primer sealent and case neck sealant make MK262 a good choice.   In case you are showering with your AR.  You know, for the hardcore AR peeps.  

Another interesting article on an even different load from Black Hills, the 77 grain TMK.  A tipped bullet.....  But not mk262.

http://www.thefirearmblog.com/blog/2015/06/09/black-hills-77-grain-tipped-matchking-precision-5-56mm-ammo/
Link Posted: 3/17/2017 11:17:11 PM EDT
[#34]
Anyone tell me who had the mod 0/1 manuals? id like to buy few
Link Posted: 3/17/2017 11:39:04 PM EDT
[Last Edit: RubiconJk] [#35]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Lurp06x:
Pics for page 800!
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0814_zpsjpy6t5yr.jpg?w=480&h=480&fit=clip

Here's s 5 round group I shot today testing some hunting ammo for coyotes. This was federal fusion 62gr. Just weird that it shot 2.5" lower than 77gr otm.
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0812_zps1rf4urov.jpg?w=480&h=480&fit=clip
View Quote
62gr fusions are loaded to 223 spec pressures, 55k. You should see the drop at 400yards vs the 556 77s loaded to 62k cup.

Vanquishings, take a peek at the Berger 70 vlds and 77 tactical, they shoot lights out for me in a 1-8tw wylde, 18" and 10.5" lengths.
Link Posted: 3/17/2017 11:47:41 PM EDT
[#36]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RubiconJk:
62gr fusions are loaded to 223 spec pressures, 55k. You should see the drop at 400yards vs the 556 77s loaded to 62k cup.

Vanquishings, take a peek at the Berger 70 vlds and 77 tactical, they shoot lights out for me in a 1-8tw wylde, 18" and 10.5" lengths.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RubiconJk:
Originally Posted By Lurp06x:
Pics for page 800!
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0814_zpsjpy6t5yr.jpg?w=480&h=480&fit=clip

Here's s 5 round group I shot today testing some hunting ammo for coyotes. This was federal fusion 62gr. Just weird that it shot 2.5" lower than 77gr otm.
http://rs1058.pbsrc.com/albums/t403/buntonjonathan/IMG_0812_zps1rf4urov.jpg?w=480&h=480&fit=clip
62gr fusions are loaded to 223 spec pressures, 55k. You should see the drop at 400yards vs the 556 77s loaded to 62k cup.

Vanquishings, take a peek at the Berger 70 vlds and 77 tactical, they shoot lights out for me in a 1-8tw wylde, 18" and 10.5" lengths.
RubiconJK, whatever I try I can't beat the 73 Berger's at the moment, have them cruising along at 2800, super groups, funny considering they were the original bullet chosen for 262.
Link Posted: 3/18/2017 12:11:31 AM EDT
[Last Edit: RubiconJk] [#37]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By tamboi:


RubiconJK, whatever I try I can't beat the 73 Berger's at the moment, have them cruising along at 2800, super groups, funny considering they were the original bullet chosen for 262.
View Quote
Maybe I got a bad batch my first try, but the 73s I had, .8gr difference in one box. Low was...72.4 and high was 73.2. Hate having to weigh and sort bullets. I'm use to seeing no more than .3 variance from berger. I'll have to give them another try, since they are on sale at midway as we speak. Do you load to mag length, how far of a jump you running? Do you ladder or ocw workups?
Link Posted: 3/18/2017 12:12:50 AM EDT
[#38]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RubiconJk:


62gr fusions are loaded to 223 spec pressures, 55k. You should see the drop at 400yards vs the 556 77s loaded to 62k cup.

Vanquishings, take a peek at the Berger 70 vlds and 77 tactical, they shoot lights out for me in a 1-8tw wylde, 18" and 10.5" lengths.
View Quote
trying to find a decent hunting ammo. but the more i search the more it seems im better off rolling my own or sticking with mk262 stuff.

Will i catch hell if i slap a vickers sling and blue force forward sling adapter on my mod 0?
Link Posted: 3/18/2017 12:28:57 AM EDT
[Last Edit: tamboi] [#39]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By RubiconJk:


Maybe I got a bad batch my first try, but the 73s I had, .8gr difference in one box. Low was...72.4 and high was 73.2. Hate having to weigh and sort bullets. I'm use to seeing no more than .3 variance from berger. I'll have to give them another try, since they are on sale at midway as we speak. Do you load to mag length, how far of a jump you running? Do you ladder or ocw workups?
View Quote
Weights were typical of Berger, as usual excellent. I use Erik Cortinas method, I find it simply works for me. Loading of the ogive, to be honest they fit in the mags and that's about it, I never actually tried jumping them any length as accuracy seemed good enough?. Plus I'm terrible at shooting groups always pull one or two, that's a five shot group under the dime.
Attachment Attached File


Slightly different load, ten shots in total

Attachment Attached File


Numbers aren't bad either
Link Posted: 3/18/2017 12:40:24 AM EDT
[#40]
Numbers aren't bad either, this was for a total of nine shots with three different primers

Attachment Attached File
Link Posted: 3/18/2017 12:40:53 AM EDT
[#41]
since we finally hit a good number...

here's to 800.

Link Posted: 3/18/2017 12:54:25 AM EDT
[#42]
800!



Link Posted: 3/18/2017 1:25:56 AM EDT
[#43]
still waiting on my AEM5 from july.
Link Posted: 3/18/2017 1:47:28 AM EDT
[#44]
Had a good session with the Holland yesterday.  My Mod 1 was my #1 but I think the H has it beat but not by much and only cuz of the shorter barrel and lighter weight.
Link Posted: 3/18/2017 2:30:15 AM EDT
[#45]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Doc_Lane:
My Mk12 Mod 1 is finally done.  I started the build in the fall of 2014 with a NoDak Spud A1 receiver and finished it this week with a set of ARMS 22H NLS rings (thanks JJREA).  

First photo of the finished rifle...

http://i.imgur.com/FZeDQyr.jpg

I don't have the complete kit (case, sling, etc.), but I am happy to call it good.    





Now to finish Mk18 project I started a few months ago.  
View Quote
Outstanding!

Right behind you, same, same, only diff being a LMT Gen 1 SOPMOD. Just waiting on CLE to finish turning that Douglas barrel.
Excited is an understatement!
Link Posted: 3/18/2017 10:26:29 AM EDT
[#46]
Discussion ForumsJump to Quoted PostQuote History
That's how it's done right there.
Link Posted: 3/18/2017 10:57:48 AM EDT
[#47]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By IronBalaclava:
Outstanding!

Right behind you, same, same, only diff being a LMT Gen 1 SOPMOD. Just waiting on CLE to finish turning that Douglas barrel.
Excited is an understatement!
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By IronBalaclava:
Originally Posted By Doc_Lane:
My Mk12 Mod 1 is finally done.  I started the build in the fall of 2014 with a NoDak Spud A1 receiver and finished it this week with a set of ARMS 22H NLS rings (thanks JJREA).  

First photo of the finished rifle...

http://i.imgur.com/FZeDQyr.jpg

I don't have the complete kit (case, sling, etc.), but I am happy to call it good.    





Now to finish Mk18 project I started a few months ago.  
Outstanding!

Right behind you, same, same, only diff being a LMT Gen 1 SOPMOD. Just waiting on CLE to finish turning that Douglas barrel.
Excited is an understatement!
Very nice!  I look forward to seeing your rifle once it's finished.

I really like the SOPMOD stock, but decided to go old school on my Mk12.  In fact, I started off my Mk12 project intending to build a Mod 0.  I got the NoDak A1 receiver and used as many surplus M16A1 parts as I could, like the trigger guard, the stock, buffer tube, mag catch, the springs and pins - basically, everything that wasn't NFA regulated. I also got a Geissele trigger.

Then, at some point, I fell in love with the Mod 1.  I thought about building the upper but really liked what I saw and read about the HCS upper.  So, I ordered an upper from Kevin.  I am extremely happy with it.  

I decided to keep the A1 stock, and I really like the feel of it.

I will be getting a SOPMOD stock for my Mk18 build, so I can enjoy both the classic and the more modern stock experience with these two clones.
Link Posted: 3/18/2017 11:14:08 AM EDT
[#48]
Link Posted: 3/18/2017 11:23:48 AM EDT
[#49]
@lance. Hnnnnng. I've got a D3300 and can't get picture's like that to save my life. Is it mainly in your lens or lighting?
Link Posted: 3/18/2017 12:02:01 PM EDT
[Last Edit: lancecriminal86] [#50]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By eMc9001:
@lance. Hnnnnng. I've got a D3300 and can't get picture's like that to save my life. Is it mainly in your lens or lighting?
View Quote
Stock kit lenses, no fancy flash.

I just use two lamps with the nice daylight white/blue bulbs and try to get uniform light, get a tripod, and use the aperture setting. Manually set ISO to 100 or 200 so it does a long exposure but keeps the quality high. I had some poster paper down but you can still obviously see the washing machine and concrete where I didn't have enough.

Oh, and in the Nikon RAW exposure tool thing I mess with the white balance and the contrast/levels. There's a tool to select a white point and black point I use those and find the lightest whit spot on the histogram. It helps a lot. Then fidget with white balance to get the right temperature so the paint has the right khaki/grey tone to it instead of an orange tint.
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