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Posted: 2/21/2006 12:17:21 AM EDT
I have a Rock Entry Tactical that I want to turn into a MK12 Mod 0 SPR clone
Can you list the parts, approx prices and location where I can score what I need. I want the end product to resemble the photo below. I dont need the Ops INC collar or brake, I will be mounting a phantom. Would a middy 16" be okay in place of a 18" SPR, or will I degrade long range performance Is the MK 12 Mod 0 SPR a solid 500-600 yard minute of head/dead weapon? Here is the illustration that is my inspiration, only I will lose the A2 stock and use a Magpul PRS  |
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Posted: 2/21/2006 12:49:55 AM EDT
[#1]
With all due respect, the weapon that you are talking about barely resembles the SPR. Why not get one of MSTNs precision uppers. Skip the SWAN sleeve, get a Larue rail, and a 16 inch barrel. The assembly will be lighter, possibly cheaper and much better looking, if that is your goal.
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Posted: 2/21/2006 2:02:17 AM EDT
[#2]
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Posted: 2/21/2006 4:13:42 AM EDT
[#3]
look up adcofirearms or mstn in the industry forum. there is lots of info there and they are two good spr builders.
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Posted: 2/21/2006 5:17:17 AM EDT
[#4]
Real SPR uppers are available... but very spendy, I can get them as can Steve from ADCO, but Steve can get you an SPR clone that is soooooooo close to being the real thing that it really is sort of funny.
Some more of the Enhanced SPR uppers were just done, but may all be spoken for... have to check. in any case, I would hit up Steve at ADCO -- complete upper, parts or just talk to someone that knows what they are talking about (that last thing being a reare find really). |
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Posted: 2/21/2006 5:27:27 AM EDT
[#5]
This is from an SPR article out of Combat Tactics magazine, Sept 2005.
 
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Posted: 2/21/2006 7:05:28 AM EDT
[#6]
I would contact Adco.
They are biulding some of the nicest SPR's around. |
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Posted: 2/21/2006 7:12:36 AM EDT
[#7]
What is Stag supplying for the SPR? Upper reciever and BCG?
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Posted: 2/21/2006 7:14:17 AM EDT
[#8]
Doesn't the red above negate a REAL SPR clone? |
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Posted: 2/21/2006 7:15:19 AM EDT
[#9]
Nothing for the real ones... |
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Posted: 2/21/2006 7:17:07 AM EDT
[#10]
Why doesn't it resemble a Mk12Mod0 SPR? IIRC Mod 0's had the PRI carbon tube, and were built on M16A1 lowers. The Mod 1's had the DD rails and some flavor of collapsable buttstock. |
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Posted: 2/21/2006 7:22:14 AM EDT
[#11]
I'll contact ADCO and MSTN. For those that built their SPR uppers, what was the cost in the end?
What kind of accuracy can I expect shooting M855? |
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Posted: 2/21/2006 7:24:32 AM EDT
[#12]
I don’t know why Stag is mentioned there in the specs. I thumbed through the entire article again and found no mention of Stag at all.  |
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Posted: 2/21/2006 7:29:04 AM EDT
[#13]
You should hit a Grapefruit at 100yds. If you arent going to be buying match ammo, dont waste your money on an upper built to shoot match ammo. If you are building something to look cool; have fun, but be realistic in you expectations. IMO, if you are going to be shooting ball ammo, just get a standard, chrome-moly barrel, and spend the extra money on ammo. |
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Posted: 2/21/2006 7:31:52 AM EDT
[#14]
It sounds like you want a "REECE" and not an SPR.
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Posted: 2/21/2006 7:34:11 AM EDT
[#15]
I got a custom rifle instead of going full out SPR with all the proper SPR or Recce specs.
An industry partner built it for me himself and I added a few used parts. Total Price with EVERYTHING came out to about 16-1700. An SPR could easily double that or more. Ameetec upper and lower (which industry partner, hmmmmm.... ) with 18" fluted prototype barrel mid-length gas system with a vortex on the end. PRI low gas block with a samson rifle length rail over it and a harris 6-9 no swivel yes notches. Chrome bolt carrier, bolt group etc. Rock River dual stage trigger, magpul trigger guard, SPR grip, VLTOR A1 clubfoot stock. DPMS mangonel front sight, troy rear, LArue 5/8" QD riser with a super sniper on Loopy QRW rings. Ammo will be 75 and 77 gr black hills exclusively (some blue some red) and I hope to make tiiiiiny little groups of holes. |
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Posted: 2/21/2006 7:36:52 AM EDT
[#16]
acc to your thread, upper and lower seemed std, am i right? |
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Posted: 2/21/2006 7:56:27 AM EDT
[#17]
The goal really is to build a 500-600 yard AR15. If that requires 75 and 77 gr match ammo that is fine. I just have about 2000 rounds of M855 sitting in the closet. Can you do a conversion on an RRA upper into a MK12 Mod 0 with some minor changes? Also what is the turnaround time on getting SPR MK12 Mod 0 uppers from adco currently? |
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Posted: 2/21/2006 8:02:21 AM EDT
[#18]
The only similarities that his desired configuration would retain are the PRI float tube and a plethora of ARMS paraphenalia. A Recce can do most of the same things, and is actually more similar to what he was talking about getting. |
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Posted: 2/21/2006 8:07:22 AM EDT
[#19]
I can mix and match all kinds of parts for you  Going by your request of requirements/wants, you may be happier with my Mini Mod 1, which is a 16" Middy w/DD 9.0 rail. |
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Posted: 2/21/2006 8:07:39 AM EDT
[#20]
Someone remind me again what the differences are between a Recce and SPR are |
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Posted: 2/21/2006 8:28:03 AM EDT
[#21]
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Posted: 2/21/2006 8:47:32 AM EDT
[#22]
Recces tend to be shorter, lighter and more carbine-like. The big difference is in the optic. You are going to want a bigger one than a true Recce would have.
The SPR is type-classified, the Recce is a more fluid concept. My main point is that just cause the Army uses (although they don't all necessarily like) the SPR doesn't mean it is what you want to build. |
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Posted: 2/21/2006 9:14:34 AM EDT
[#23]
I got the pri tube, front and rear buis from http://www.oriontacticalgear.com/PRI.html
he has the best prices and free shipping. also great customer service. the arms rings, PRI gas buster charging handle, and SPR PEQ 2-3 rail from www.adcofirearms.com you can also get the white oak armament SPR barrel from him as well I also think he sells the ops inc. break. If you have any more questions email me. |
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Posted: 2/21/2006 9:25:27 AM EDT
[#24]
One more build down and one more to go. My version of an SPR came out great with the minor exception of having to go with a 4 port Ops Inc brake instead of the correct military 2 port with the collar. Some day before I die.
Colt upper KAC lower w/KAC two stage trigger Noveske 18' SS, poly 1/7 w/ 5.56 match chamber, PRI Mod O contour PRI Gen III CF tube PRI front sight ARMS PEQ2A rail w/40L BUIS Rock SOPMOD bipod Magpul PRS, MIAD and triggerguard SF M972 in LT offset mount NF 2.5-10 w/ NPR2 reticle in LT pount w/J-Point mount and J-Point Target was set at 150yds and I shot 5 round groups off of a bench using the bipod. Ammo was MK262. The rifle flat out shoots, no doubt about it. Noveske barrels are smoking good. I have seen some of ADCO's and MSTN's work as well. They both really know their stuff and you couldn't go wrong with either. http://i20.photobucket.com/albums/b243/conndcj/SPR01.jpg http://i20.photobucket.com/albums/b243/conndcj/SPR02.jpg http://i20.photobucket.com/albums/b243/conndcj/SPR03.jpg http://i20.photobucket.com/albums/b243/conndcj/SPR04.jpg http://i20.photobucket.com/albums/b243/conndcj/SPR05.jpg |
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Posted: 2/21/2006 9:35:58 AM EDT
[#25]
That SPR was built for the article and is not to spec. Stag and Surefire are NOT on the SPR menu. Middys are an alternative to carbines, not rifles. You are considering 2 totally differnt rifles here. You certainly will lose velocity and range going from 18 to 16 inches, but it won't be a huge reduction. But it's not clear if you want a built upper or if you want to do it yourself. You can save a lot of money by sourcing parts and doing the labor yourself, but there are some install techniiques unique to an SPR that you should be aware of. It isn't just a matter of slapping the parts on. |
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Posted: 2/21/2006 9:39:59 AM EDT
[#26]
Why did you choose to mount your optic that way? |
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Posted: 2/21/2006 9:50:33 AM EDT
[#27]
I thought the MK12's had KAC stuff...like the KAC FF rail etc....what rifle has those?
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Posted: 2/21/2006 9:55:18 AM EDT
[#28]
If you want the SPR tacticool look, have at it, but 90% of the stuff on an SPR is completely unnecessary for building an AR that will group MOA or less at 600 yards.
A Krieger or Pac-Nor 1/8 barreled varmint upper from White Oak Precision, a good scope and rings, and a Geissele trigger in your lower is all you need. The rest of the stuff are peripherals that do nothing to improve accuracy. |
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Posted: 2/21/2006 10:29:49 AM EDT
[#29]
I'm toying with ways to simplify the design and shave cost, but maintain some level of easiness on the eyes. I came up with something I think fits okay 16" Dissy SPR. Should be much cheaper to make than a real SPR upper and give me what I need. Is this config possible? I would need a free float rail that doesnt require the fsb to be butchered or removed 
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Posted: 2/21/2006 10:33:04 AM EDT
[#30]
It probably won't work as well as a 16 inch mid-length would due to timing issues. And be sure to get a float rail, there is the possibility of POI shift with a non-float rail.
Save the money on the SWAN sleeve/ARMS rings and get a Larue mount and if you want buy a cheap 100 dollar float tube. |
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Posted: 2/21/2006 10:34:55 AM EDT
[#31]
What timing issues?
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Posted: 2/21/2006 10:39:51 AM EDT
[#32]
You could use a troys float tube for that I think but I would not do a dissy when there is sooo much more out there to choose from.
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Posted: 2/21/2006 10:40:05 AM EDT
[#33]
dwell |
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Posted: 2/21/2006 10:41:28 AM EDT
[#34]
Will that realy play a factor if it is not select fire? Is there something I am missing? My M4 fires fine, even on burst, is it something about a dissipator?
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Posted: 2/21/2006 10:58:28 AM EDT
[#35]
it all depends on the kool-aid you drink, the wonder of the firearms. You design exactly what you want...
here was my take on the SPR  Upper Bushmaster Upper LMT Enhanced Bolt Carrier Colt Bolt (gauged by Dave at PRi to fit my chamber, since the CMT wouldn't fit, funny eh?) CMT Charging Handle ABS 18inch Carbon Fiber Barrel, .223 Wylde Chamber, Pacnor super-match SS, 1:8twist PRi low profile, rifle positioned gas block PRi Gen III carbon fiber fore-end, small rails at 6/12 o'clock positions MSTN Quiet Brake Harris 6-9 pod-lock w/larue QD mount Lower: Bushmaster lower SOPMOD Stock MIAD Grip/trigger guard with internal backup LMT Bolt and firing pin Geissele Match 2-stage Trigger, 4lbs total, last stage at 1lb Optics: SN-3 1.8-10x, 44ergo objective, MOA Illuminated Reticle, .223 BDC, mounted in the Larue SPR Jpoint 3.5moa red-dot on top of the Larue Mount Troy Front and Rear BUIS |
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Posted: 2/21/2006 10:59:59 AM EDT
[#36]
You need to understand the relationship between barrel length and has port location. |
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Posted: 2/21/2006 11:04:12 AM EDT
[#37]
So my 14.5 inch barrel and carbine length gas system will have less dwell that a dissipator. I dont know anything about dissys is why I am asking, not trying to start a flame war or anything like that.
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Posted: 2/21/2006 11:07:17 AM EDT
[#38]
The Bushmaster Dissipator has a carbine gas system and a 16" barrel. |
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Posted: 2/21/2006 11:08:10 AM EDT
[#39]
So in a semi auto rifle what would the effects be?
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Posted: 2/21/2006 11:50:46 AM EDT
[#40]
Dude! What the hell did you do? |
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Posted: 2/21/2006 2:06:06 PM EDT
[#41]
Buy a RRA NM A2 and learn how to shoot.
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Posted: 2/21/2006 2:09:01 PM EDT
[#42]
Thats an expensive gun to learn how to shoot on. |
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Posted: 2/21/2006 2:10:25 PM EDT
[#43]
If the goal is for a 600 yard rifle, then a RRA NM A2 will do that out of the box. Well, you need a sling, but otherwise... |
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Posted: 2/21/2006 2:16:19 PM EDT
[#44]
oh ok yeah no doubt. to learn how to shoot at 060 yeards the simple way, definitely RRA nm A2. Then again, oince you master that, who needs a damn scope or SPR! |
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Posted: 2/21/2006 2:38:34 PM EDT
[#45]
A hell of a lot cheaper than an SPR clone, I'll tell you that right now. Besides, it is foolish to buy an inaccurate rifle and poor quality ammo to learn to shoot. A novice is the one who benefits the most from the most accurate rifle and ammo combination, since such combination removes the most variables from the equation and provides the most accurate feedback to the shooter. |
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Posted: 2/21/2006 10:48:35 PM EDT
[#46]
Can you be a little bit more specific on the subject, please. |
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Posted: 2/22/2006 12:05:13 AM EDT
[#47]
Just for general info and ref....
http://en.wikipedia.org/wiki/United_States_Navy_Mark_12_Mod_X_Special_Purpose_Rifle |
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Posted: 2/22/2006 6:46:17 AM EDT
[#48]
I just want to know who did those illustrations.....
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Posted: 2/22/2006 6:57:01 AM EDT
[#49]
He's a couple of posts up. Dogfight Ink :) |
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Posted: 2/22/2006 7:36:10 AM EDT
[#50]
some thoughts on timing, dwell and all of that.... From this thread. BTW: Midlength Dissy is a nice rig!
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