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Posted: 3/16/2014 2:38:14 AM EDT
[Last Edit: Lancelot]
When discussing the Mk 18 / CQBR program, we can divide the history and discussion in to two distinct categories: 1) The weapon system itself / upper receiver supplied and 2) the group of accessories deployed on said weapon systems (SOPMOD).
---------- Mk 18 Mod 0 / CQBR The M4 carbine and M16 are not ideally suited for all missions, so it was proposed that the modularity of the M16 series would allow a user to replace the upper receiver of an existing weapon with one more suitable to the task. One of two proposed special mission receivers that were planned for inclusion into the SOPMOD Block II kit, the CQBR has taken off on its own. Like the proposed Special Purpose Receiver, the Close Quarters Battle Receiver has been more or less taken on by the Naval Surface Warfare Center, Crane Division (often referred to as NSWC-Crane or just "Crane") as its own project following the CQBR's removal from the SOPMOD program. Just as the Special Purpose Receiver morphed into the Special Purpose Rifle, and was type-classified as Mk 12 Mod 0/1, the complete CQBR-equipped carbine has been type-classified as the Mk 18 Mod 0. The purpose of the CQBR remains to provide operators with a weapon of submachine gun size, but firing a rifle cartridge, for scenarios such as VIP protection, urban warfare, and other close quarters battle (CQB) situations. The CQBR is designed to provide improvement over previous AR-15/M16-type weapons in this category. The CQBR is usually issued as a complete weapon system, and not just an upper receiver. The CQBR was once only available to Naval Special Warfare units, but the Mk 18 Mod 0 has become general issue for Visit, Board, Search, and Seizure (VBSS) missions and, as of 2006, for NCIS agents deploying to active combat zones.[citation needed] The Mk 18 is also used by the Coast Guard's Tactical Law Enforcement Teams, Maritime Safety and Security Teams, and Maritime Security Response Team and the United States Navy's Explosive Ordnance Disposal (EOD) Operators. Wikipedia has a good article with sources on the original CQBR/Mk 18 Mod 0 and its development. ---------- SOPMOD The SOPMOD Program Management Office at NSWC Crane, IN, provides standardized, versatile weapons accessories to meet needs across SOF mission scenarios. These accessories increase operator survivability and lethality by enhanced weapon performance, target acquisition, signature suppression, and fire control. The CQBR itself was originally part of the SOPMOD program as an accessory replacement upper receiver for the M4. However it was eventually separated out into its own project. SOPMOD accessories for the M4/CQBR originally included things like the KAC RIS/RAS, SOPMOD stock, KAC M4QD suppressor, AN/PEQ-2 illuminator/laser, ECOS-N red dot, ACOG, etc The SOPMOD program has gone through multiple minor and major evolutions throughout its lifetime. The most significant is commonly defined as "Block II" and included the introduction/replacement of accessories that met the updated needs of operators. The most visually significant "Block II" accessory is probably the replacement of the KAC rail/FSB with the Daniel Defense RIS II free float rail with low-profile gas block. Other updates include things like the Surefire SOCOM sound suppressor, EOTech RDS (553/SU-231 & EXPS 3-0/SU-231a), LA-5/PEQ ATPIAL, etc ---------- Link to docs and photo albums Presentation on CQBR from Crane Operator's Manual for Mk 18 Mod 0 SOPMOD Program Overview presentation from Crane Photo Album of Mk 18 Mod 0 Photo Album of CQBR with SOPMOD Block II accessories ---------- Because of the long history of both the CQBR/Mk 18 and SOPMOD programs, it's common to find weapons with various mixed configurations in the field, all depending on what time and unit the weapon system belongs to. Below are a few examples with descriptions to illustrate this. Example of a Mk 18 Mod 0 in as-issued configuration including: M16A1 surplus lower receiver, SOPMOD buttstock, KAC RIS, KAC M4QD flash hider, Aimpoint Comp M2 in Wilcox mount, LMT rear fixed sight, CQD rear sling plate. NSW Operator CQBRs with original SOPMOD accessories including KAC M4QD sound suppressor and AN/PEQ-2 IR Illuminator/Laser. Member of a Combat Camera team with a CQBR with KAC RAS and M4QD flash hider but with other updated accessories from the "Block II" SOPMOD kit including SU-231a (EOTech EXPS 3-0), EOTech G33 Magnifier, LA-5/PEQ ATPIAL, Insight WMX-200. Good example of "early" CQBR with SOPMOD Block II accessories including SU-231 (EOTech 553) and SU-233 (Insight M3x weaponlight). Example of a more "modern" CQBR with SOPMOD Block II accessories including the updated SU-231a (EOTech EXPS 3-0) and Insight WMX-200 weaponlight. Many times certain configurations are common within certain branches/groups. Here a Marine Raider is seen with a CQBR with an AN/PEQ-16 (USMC issued vs. the LA-5/PEQ SOCOM issued ATPIAL) and KAC NT4 suppressor (vs. the current Surefire SOCOM suppressor). ---------- Building a clone If you're interested in building a "clone" of a Mk 18 or CQBR equipped M4A1, here is a basic parts list to use as a guide and get you started. This list is not exhaustive and see the * note above regarding personalized accessories. | Mk 18 Mod 0 | M4A1 CQBR Block I | M4A1 CQBR Block II Lower Receiver | Mil-spec forged A1 | Mil-spec forged A2 | Mil-spec forged A2 Stock | Gen 1 SOPMOD (Black) | M4, CAR, SOPMOD, CTR & others | M4, CAR, SOPMOD, CTR & others Pistol Grip | A1 | A2, ERGO & others | A2, ERGO & others Rear Sling Plate | CQD | CQD | CQD Upper Receiver | Mil-spec forged M4 profile | Mil-spec forged M4 profile | Mil-spec forged M4 profile Barrel | 10.3" | 10.3" | 10.3" Rail | KAC RIS | KAC RAS | DD Mk18 RIS II (FDE) Rear BUIS | LMT Fixed | LMT Fixed, MATECH, & others | MATECH, KAC 300m, & others Front Sight | A2 FSB | A2 FSB | KAC 99051 BUIS (Taupe) Front Sling Attachment | FSB Sling Swivel | FSB Sling Swivel | CQD Muzzle Device | KAC M4QD | KAC M4QD | SureFire FH-556-RC Supressor | None | KAC QDSS NT4 | SureFire SOCOM556-RC (FDE) LAM | None | PEQ-2 | LA-5 Weaponlight | SureFire M962 | SureFire M952, M962 | Insight M3X (Tan), Insight WMX200 (Bronze) Optic | Aimpoint Comp M2 in Wilcox Mount | Aimpoint Comp M2 in QRP Mount, ACOG | EOTech 553 (Tan), EOTech EXPS3-0 (Tan), ELCAN 1-4x (FDE) ---------- Link to previous threads Previous Mk 18 / CQBR Thread Part I Previous Mk 18 / CQBR Thread Part II |
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Originally Posted By smitty_007:
FYI - I just spoke to Daniel Defense and the guy there said, as far as he knows, all of the Socom barrels have a .071 gas port no matter when manufactured. View Quote |
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Originally Posted By JohnnySasaki20:
Really? I've always found that vert grips (held like an AFG) work better on short and light guns, and actual AFG's work better on long and heavy guns. View Quote View All Quotes View All Quotes Originally Posted By JohnnySasaki20:
Originally Posted By MILSPEC556:
Im with you there man. Waste for sure. Which is why I also stick with the B5 grip stop and the AFG. Both of those give me a solid purchase on a Mk18 RIS II anyways so there's no need to bother with a 10.3 pin/weld. I just stick with vert grips on longer/heavier guns. On my block II 14.5s, the AFG was nice. But not on a long gun with M4 RAS |
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Colt all the shit!
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Originally Posted By krdt: All of the "SOCOM" labeled DD Mk18 uppers should be .070, but you could confirm that with DD. Popping the block to measure is the only way to be 100% sure without shooting it. If it's the old .080+ port, you should be able to tell pretty quickly just by how it behaves when shooting. ETA: Top o' the page. Came across these the other day that I took while painting the NQR Mod 0 (NQR as in Not Quite Right). All the supplies necessary for a proper rattle can job: parts, paint and single malt scotch. http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-01.jpg http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-02.jpg http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-04.jpg http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-08.jpg http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-11.jpg http://wkd.site.nfoservers.com/CQBR/paint/mod0.paint-14.jpg And a little more current: http://wkd.site.nfoservers.com/CQBR/Mk18.All.The.Paint.jpg View Quote |
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Live Free or Die
NRA Patron Member Follow me on IG @josh_goes_pewpew |
Can anyone confirm if the Surefire UE pressure switch tailcap is compatible with the m300c 500lumen weaponlight?
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Originally Posted By ninjasteezify: I bought one of the SOCOM uppers from brownells back in late 2016 and it seems pretty over gassed. Ejection at 2:00 unsuppressed and 1:00 suppressed. Plenty of gas in the face. This is with an H3 buffer too. I did just buy another one last month with an inspection date of October 2017 so i guess I'll find out if there's a difference when get a chance to shoot it View Quote Well, this is fun. I’ll just shoot it and see what happens. |
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Originally Posted By smitty_007:
Just called them again, talked to a different technical phone person, and she said if it has an inspection date prior to June 2017 then it wouldn’t have the smaller gas port. Well, this is fun. I’ll just shoot it and see what happens. View Quote View All Quotes View All Quotes Originally Posted By smitty_007:
Originally Posted By ninjasteezify: I bought one of the SOCOM uppers from brownells back in late 2016 and it seems pretty over gassed. Ejection at 2:00 unsuppressed and 1:00 suppressed. Plenty of gas in the face. This is with an H3 buffer too. I did just buy another one last month with an inspection date of October 2017 so i guess I'll find out if there's a difference when get a chance to shoot it Well, this is fun. I’ll just shoot it and see what happens. Or you could try to get it exchanged. Tell them its unfired and you don't want their gaping ass gas port? Its worth a try |
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Colt all the shit!
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Originally Posted By Dudemanbro: UE is the one you want for a scout light, m300c included. View Quote |
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Originally Posted By IceAuger:
Not sure if you're referring to the "regular" KAK tube or their Super Sig, but here is a picture of the APF vs regular KAK and some measurements. As you can see, the APF extends to the end of the SBM4. The tube was specifically designed to fit the SBM4 and has a shoulder to maintain a decent LOP. APF/SBM4 View Quote |
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- Selling left nut for a Wilcox NF T1/MRDS mount.
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Originally Posted By MILSPEC556:
I would seriously just either get one of those gas port shrink fitting dealio's, or an adjustable gas block that will fit under a Mk18 RIS II. Or you could try to get it exchanged. Tell them its unfired and you don't want their gaping ass gas port? Its worth a try View Quote i was a Dumbass and didn't specify the port size to adco so they opened it HUGE, I could fit a 3/32 punch in that bitch easily. the insert worked great but at the end of the day it bothered me, so did the DD barrel. I got a colt barrel in the mail from adco right now coming back from adco. also got an m300v, it kicks the shit out of the atpial c illuminator. |
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Anything worth doing is worth overdoing. Moderation is for pussies.
"Drugs and alcohol are not my problem - reality is my problem. Drugs and alcohol are my solution." - Russel Brand |
Originally Posted By JohnnySasaki20: In all fairness, ANYTHING kicks the shit out of an atpial-c illuminator, lol. View Quote |
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Originally Posted By prodigy808: Ok awesome. Thank you. I’ve read that the newer m300c 500lumen light has a new release body supposedly and the UE tailcap is not compatible which sucks because I got mine with only the clicky tailcap that comes with it. Thanks again View Quote |
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The UE- SR07-TN cap/switch I ordered from Optics Planet came in today and it works perfectly with my tan 500 lumen. Nothing changed on the M300C body between the 300 lumen and 500 lumen that I can see - they even use the same KE1F head, just with some tweaks to get more lumens. If you read the Q and A on Optics Planet for the UE-SR07, the "gear expert" says it won't work with an M300C, but that is totally incorrect.
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Practice, the master of all things. - Augustus
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Originally Posted By krdt:
The UE- SR07-TN cap/switch I ordered from Optics Planet came in today and it works perfectly with my tan 500 lumen. Nothing changed on the M300C body between the 300 lumen and 500 lumen that I can see - they even use the same KE1F head, just with some tweaks to get more lumens. If you read the Q and A on Optics Planet for the UE-SR07, the "gear expert" says it won't work with an M300C, but that is totally incorrect. View Quote |
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Colt all the shit!
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Originally Posted By Spooled:
Very true. Even the vampire leaves some to be desired. If only the mawl wasn't expensive and the d2 wasn't a pig. I think about picking up a full power from time to time but I really don't need that much for the shooting I do. View Quote When you say, 'full power' do you mean a non-civilian model or what? |
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Originally Posted By MILSPEC556:
Yeah optics planet is a bunch of fucking trolls. Its definitely externally the same light, and after seeing your comparison pics, it might even be internally the same light. View Quote View All Quotes View All Quotes Originally Posted By MILSPEC556:
Originally Posted By krdt:
The UE- SR07-TN cap/switch I ordered from Optics Planet came in today and it works perfectly with my tan 500 lumen. Nothing changed on the M300C body between the 300 lumen and 500 lumen that I can see - they even use the same KE1F head, just with some tweaks to get more lumens. If you read the Q and A on Optics Planet for the UE-SR07, the "gear expert" says it won't work with an M300C, but that is totally incorrect. When I imagined what the new 500 was going to be, it was the same beam pattern of the 300 just with more throw. That isn't quite what I got, heh. |
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Practice, the master of all things. - Augustus
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My 10.3 brownells seems gassy with the socom rc1. March 24 inspection date. However, a 5/64 (.078) drill bit definitely will not fit in the gas port. This leads me to believe it is .07-.072 as the calipers appeared to show that diameter. Just throwing this out there for the earlier urg’s.
Anyone else measure a March URG? This is the only 10.3 inch I’ve ever shot suppressed. Using the Geissele ach charging handle too. But probably gassy as hell regardless of CH being only 10.3. |
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Curious as mine is gassy but appears to be .07-ish.
Originally Posted By ninjasteezify: I bought one of the SOCOM uppers from brownells back in late 2016 and it seems pretty over gassed. Ejection at 2:00 unsuppressed and 1:00 suppressed. Plenty of gas in the face. This is with an H3 buffer too. I did just buy another one last month with an inspection date of October 2017 so i guess I'll find out if there's a difference when get a chance to shoot it View Quote |
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Stumbled across this old pic today. Attached File
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Originally Posted By TNW:
Stumbled across this old pic today. https://www.AR15.Com/media/mediaFiles/385055/30715313-9EE4-432A-A085-688D3E835FAC-435659.JPG View Quote |
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Gun control is like trying to reduce drunk driving by making it tougher for sober people to own cars.
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Originally Posted By krdt: Ha... if I found out tomorrow the old M300C is the same or even brighter than the new one, I wouldn't be completely shocked. If it weren't for the temptation of the tan, I actually prefer the old beam to the new one :\. When I imagined what the new 500 was going to be, it was the same beam pattern of the 300 just with more throw. That isn't quite what I got, heh. View Quote I've got one of the old M300C's in black to compare it to. Also have an M600U and M600P, the new M300C 500 is good to go. |
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Originally Posted By purevl2:
Other members have called and have been told otherwise. View Quote |
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Originally Posted By Roadblock:
The new one is definitely brighter but the new one is also more yellowish verses the old one being more white. The white is perceived as being brighter by the eye but out in the woods the newer 500 throw much farther, took it out hiking at midnight the other night! ;P I've got one of the old M300C's in black to compare it to. Also have an M600U and M600P, the new M300C 500 is good to go. View Quote View All Quotes View All Quotes Originally Posted By Roadblock:
Originally Posted By krdt: Ha... if I found out tomorrow the old M300C is the same or even brighter than the new one, I wouldn't be completely shocked. If it weren't for the temptation of the tan, I actually prefer the old beam to the new one :\. When I imagined what the new 500 was going to be, it was the same beam pattern of the 300 just with more throw. That isn't quite what I got, heh. I've got one of the old M300C's in black to compare it to. Also have an M600U and M600P, the new M300C 500 is good to go. I posted some comparison shots between the old and new M300 several pages back. I personally don't think the new M300C is particularly worth upgrading without the reintroduction of tan (which is probably why Surefire made that move). If someone already has an M300C they're happy with, the new one is only worth upgrading if having it in tan is important IMO. Myself, I slightly prefer the whiter and cleaner beam of the old M300C; it's not a big difference, but the old one wins out by a nose. I honestly don't notice much difference in throw between the old and new M300C at the outside distances I've used them both thus far (around 30 yards), but more spill with a yellowish beam on the new one. If I had to guess, the SF engineers were looking to add more spill with the extra 200 lumens without degrading throw at all. Not a terrible idea, just not what I expected. |
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Practice, the master of all things. - Augustus
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Originally Posted By M4A1: Awesome pic, but does your hand block your PEQ15 when activating the pressure pad? View Quote i don't care because on the civi models the illuminator is literally worthless anyway. |
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Originally Posted By krdt: Oh, I know. Partially joking, but also really wouldn't be surprised if they were both independently tested and the old one was the same brightness, lol. Of course, that gets into how we perceive lumens and lumen increases in the first place. All else being equal, it takes 4 times the lumen increase to be perceived as twice as bright. When we hear our favorite light has gone from 300 lumens to 500 or 600, we naturally expect it to be around twice as bright, when in reality it would need to be 1200 lumens to appear "twice" as bright as 300. The human eye isn't really going to find much of a difference in 300 vs 500 lumens - it really comes down to the beam pattern, density (lux) and reflector at that point (and user preferences in those departments). I posted some comparison shots between the old and new M300 several pages back. I personally don't think the new M300C is particularly worth upgrading without the reintroduction of tan (which is probably why Surefire made that move). If someone already has an M300C they're happy with, the new one is only worth upgrading if having it in tan is important IMO. Myself, I slightly prefer the whiter and cleaner beam of the old M300C; it's not a big difference, but the old one wins out by a nose. I honestly don't notice much difference in throw between the old and new M300C at the outside distances I've used them both thus far (around 30 yards), but more spill with a yellowish beam on the new one. If I had to guess, the SF engineers were looking to add more spill with the extra 200 lumens without degrading throw at all. Not a terrible idea, just not what I expected. View Quote I do think I prefer the older M300C indoors though but outdoors, I think I like the new one better. That said realistically, I'd not use the M300 outdoors, I'd probably use one of the 600 series lights I've got. Really hoping that new SF Scout that uses 18650s comes in TAN, I'd be using that for outdoors! |
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Originally Posted By krdt:
Got my APF tube today and mounted it up with the SBM4 :D. First of all, this combo is a great big heaping helping of awesome with a side of snazzy sauce. IceAuger wasn't kidding about no wiggle on the APF tube: I could barely get the thing seated, lol. Once it's on there, it's not going anywhere. The APF tube seems to be maxing tolerances on pretty much everything because my CQD endplate barely fit. I ended up skimming some of the anodizing off in the process of getting it on the tube. I didn't want to have my new tube missing anodizing along the top of the threads, so I stopped with about an 1/8" of room to force the detent spring under the endplate and didn't move it any further back. I don't have a single bad thing to say about the SBM4. It's FAR more comfortable than the Blade, it looks good and the gun balances better. The APF seems like the perfect tube to pair with it. The OAL is a little over 27", so it's VFG time :D! I put on the SR07 last night and that's pretty spiffy as well. Anyway, enough talk... pics! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-02.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-07.jpg SR07 action! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-04.jpg This shot shows the similar cheek profile to a SOPMOD. Now that it's actually on the gun, I can confirm the cheek weld is very similar. http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-05.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-06.jpg View Quote how you liking the raptor? I just put a standard latch in my gas buster and it's much more solid then the big mil latch. I love my raptor sd but it dosnt do much for gas face. |
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Originally Posted By Kidnap_44:
My Socom RC came into my FFL this weekend. Now the wait in jail begins... https://i.imgur.com/nx2erQk.jpg https://i.imgur.com/Zzws8rL.jpg View Quote Impatiently waiting for my barrel to come in. |
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Originally Posted By Spooled:
Needs more gear sector how you liking the raptor? I just put a standard latch in my gas buster and it's much more solid then the big mil latch. I love my raptor sd but it dosnt do much for gas face. View Quote View All Quotes View All Quotes Originally Posted By Spooled:
Originally Posted By krdt:
Got my APF tube today and mounted it up with the SBM4 :D. First of all, this combo is a great big heaping helping of awesome with a side of snazzy sauce. IceAuger wasn't kidding about no wiggle on the APF tube: I could barely get the thing seated, lol. Once it's on there, it's not going anywhere. The APF tube seems to be maxing tolerances on pretty much everything because my CQD endplate barely fit. I ended up skimming some of the anodizing off in the process of getting it on the tube. I didn't want to have my new tube missing anodizing along the top of the threads, so I stopped with about an 1/8" of room to force the detent spring under the endplate and didn't move it any further back. I don't have a single bad thing to say about the SBM4. It's FAR more comfortable than the Blade, it looks good and the gun balances better. The APF seems like the perfect tube to pair with it. The OAL is a little over 27", so it's VFG time :D! I put on the SR07 last night and that's pretty spiffy as well. Anyway, enough talk... pics! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-02.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-07.jpg SR07 action! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-04.jpg This shot shows the similar cheek profile to a SOPMOD. Now that it's actually on the gun, I can confirm the cheek weld is very similar. http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-05.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-06.jpg how you liking the raptor? I just put a standard latch in my gas buster and it's much more solid then the big mil latch. I love my raptor sd but it dosnt do much for gas face. Speaking of GB latches, have you tried the Combat Latch? That's my favorite by far. I like to palm charge and the Mil/Big Latch sucked for that. Course, even with the Combat Latch and solid pin the Raptor is still way better for that purpose. Hopefully the gas isn't too bad suppressed, or that RTV will make it tolerable, because I'd really rather stick with the Raptor-SD over the GB. You're telling me, I've been waiting on my backordered FDE Gear Sector since the end of fucking November, lol. I was told it would be two weeks back in early December when I was still expecting a 4 week wait on my tan M300C and figured, "Oh, no big deal." Two months later... heh. I actually emailed them just the other day to find out what the hell the deal is. They said they'll contact their Gear Sector rep and get back to me :\. At least now that I have a pressure switch it isn't so annoying to not have an offset mount. |
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Practice, the master of all things. - Augustus
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Originally Posted By krdt: I haven't had a chance to shoot my Raptor-SD suppressed yet, so I don't really know how it'll compare to the GB. As far as function and regular use, I love it. If the gas turns out to be too much when suppressed I think I'll give RTV a shot before I swap back to the GB. Any experience using RTV with the SD to see if it helps? Speaking of GB latches, have you tried the Combat Latch? That's my favorite by far. I like to palm charge and the Mil/Big Latch sucked for that. Course, even with the Combat Latch and solid pin the Raptor is still way better for that purpose. Hopefully the gas isn't too bad suppressed, or that RTV will make it tolerable, because I'd really rather stick with the Raptor-SD over the GB. You're telling me, I've been waiting on my backordered FDE Gear Sector since the end of fucking November, lol. I was told it would be two weeks back in early December when I was still expecting a 4 week wait on my tan M300C and figured, "Oh, no big deal." Two months later... heh. I actually emailed them just the other day to find out what the hell the deal is. They said they'll contact their Gear Sector rep and get back to me :\. At least now that I have a pressure switch it isn't so annoying to not have an offset mount. View Quote the only latch I tried was the big mil latch, I don't have enough faith in it to spend anymore money on it. The latch is just so wobbly it's asking for broken roll pins, the standard latch fits really tight and feels solid. |
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Originally Posted By krdt:
Got my APF tube today and mounted it up with the SBM4 :D. First of all, this combo is a great big heaping helping of awesome with a side of snazzy sauce. IceAuger wasn't kidding about no wiggle on the APF tube: I could barely get the thing seated, lol. Once it's on there, it's not going anywhere. The APF tube seems to be maxing tolerances on pretty much everything because my CQD endplate barely fit. I ended up skimming some of the anodizing off in the process of getting it on the tube. I didn't want to have my new tube missing anodizing along the top of the threads, so I stopped with about an 1/8" of room to force the detent spring under the endplate and didn't move it any further back. I don't have a single bad thing to say about the SBM4. It's FAR more comfortable than the Blade, it looks good and the gun balances better. The APF seems like the perfect tube to pair with it. The OAL is a little over 27", so it's VFG time :D! I put on the SR07 last night and that's pretty spiffy as well. Anyway, enough talk... pics! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-02.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-07.jpg SR07 action! http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-04.jpg This shot shows the similar cheek profile to a SOPMOD. Now that it's actually on the gun, I can confirm the cheek weld is very similar. http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-05.jpg http://wkd.site.nfoservers.com/CQBR/CQBR.SBM4-06.jpg View Quote |
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Originally Posted By krdt: I haven't had a chance to shoot my Raptor-SD suppressed yet, so I don't really know how it'll compare to the GB. As far as function and regular use, I love it. If the gas turns out to be too much when suppressed I think I'll give RTV a shot before I swap back to the GB. Any experience using RTV with the SD to see if it helps? Speaking of GB latches, have you tried the Combat Latch? That's my favorite by far. I like to palm charge and the Mil/Big Latch sucked for that. Course, even with the Combat Latch and solid pin the Raptor is still way better for that purpose. Hopefully the gas isn't too bad suppressed, or that RTV will make it tolerable, because I'd really rather stick with the Raptor-SD over the GB. You're telling me, I've been waiting on my backordered FDE Gear Sector since the end of fucking November, lol. I was told it would be two weeks back in early December when I was still expecting a 4 week wait on my tan M300C and figured, "Oh, no big deal." Two months later... heh. I actually emailed them just the other day to find out what the hell the deal is. They said they'll contact their Gear Sector rep and get back to me :\. At least now that I have a pressure switch it isn't so annoying to not have an offset mount. View Quote Regarding the light mount, I ordered directly from Gear Sector and got it right away. Yeah, I probably paid more than if I had ordered it from another source but I'm impatient like that. I still need sling mounts and BUIS and then I'll be close to where you're at with your setup. |
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I'm just here for the Dillo Dust
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Originally Posted By Core:
Nice build. I like the look of the Blade but it can't be comfortable in any way. I'm debating whether to go this route or a mini, after seeing your pics I believe the SBM4 is the way to go. GJ View Quote Originally Posted By IceAuger:
Glad you like the APF. Regarding the light mount, I ordered directly from Gear Sector and got it right away. Yeah, I probably paid more than if I had ordered it from another source but I'm impatient like that. I still need sling mounts and BUIS and then I'll be close to where you're at with your setup. View Quote At this point if I don't hear some good news I'll probably cancel my order and maybe pick up a Thorntail SBR. Although, now that I have a pressure switch I don't feel as much rush, so if they can give me a firm date I might just wait. When I was using the clicky cap on the left side the stock mount put it a bit in my way, but with it on the opposite side it's not that big of deal. |
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Practice, the master of all things. - Augustus
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Originally Posted By Combat_Diver:
Difference between Crane's cut down 10.3" Govt profile and FN's new 10.3" SOCOM bbls. Gas port is a measured .070" https://www.AR15.Com/media/mediaFiles/32677/IMG_4690_rz-425197.JPG https://www.AR15.Com/media/mediaFiles/32677/IMG_4693_rz-425202.JPG The parts: FN bbl, upper, BC and bolt, DD RIS II Mk18, PRI CH, SF4P FH and KAC front sight. Rest of parts are all govt contracted. Only thing that's used was the Forward Assist, almost selected a teardrop M16. https://www.AR15.Com/media/mediaFiles/32677/IMG_4691_rz-425205.JPG Assembled and installed on lower w/SSF trigger. Second we built this week with FN bbl. Bit heavier up front of course. https://www.AR15.Com/media/mediaFiles/32677/IMG_4696_rz-425206.JPG CD View Quote |
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@krdt
Did you order a tan GS mount? If you want to buy a gently used one I can pull it off the Scout I'm trying to sell. |
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Originally Posted By StevieJ309:
@krdt Did you order a tan GS mount? If you want to buy a gently used one I can pull it off the Scout I'm trying to sell. View Quote @krdt your whore CQBR called me again. She says she wants Stevie's mount. Happy wife happy life and all that. |
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Colt the rifles and super sport the motorcycles
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Originally Posted By MILSPEC556:
That gives me an idea. I'm in need of a Scout light and since I'm going the KAC M4QD route.....I should throw this well loved SF4P of mine on the EE as a trade for a light. @krdt your whore CQBR called me again. She says she wants Stevie's mount. Happy wife happy life and all that. View Quote |
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Originally Posted By Mister_Donut:
Do you guys clean your SF4P often or just let it cake up and clean it whenever you get around to it? The training can did this, can't imagine how bad it would get with a real can on it: https://4.bp.blogspot.com/-ocaoRYfUdTg/WhpI7cVvpOI/AAAAAAAArNY/T_xpXDX279EEp1Zg9s_WwhEU5XRSCm5UACKgBGAs/s1600/PB252780.JPG View Quote View All Quotes View All Quotes Originally Posted By Mister_Donut:
Originally Posted By MILSPEC556: Lots of carbon buildup thanks to stealthguy and his stupid Surefire can. https://4.bp.blogspot.com/-ocaoRYfUdTg/WhpI7cVvpOI/AAAAAAAArNY/T_xpXDX279EEp1Zg9s_WwhEU5XRSCm5UACKgBGAs/s1600/PB252780.JPG |
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On Time. On Target.
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I scrape my 3ps with a flat head when I start noticing the can gets to fitting tighter.
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Originally Posted By Mister_Donut: Do you guys clean your SF4P often or just let it cake up and clean it whenever you get around to it? The training can did this, can't imagine how bad it would get with a real can on it: https://4.bp.blogspot.com/-ocaoRYfUdTg/WhpI7cVvpOI/AAAAAAAArNY/T_xpXDX279EEp1Zg9s_WwhEU5XRSCm5UACKgBGAs/s1600/PB252780.JPG View Quote |
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Cool, thanks for all the replies guys. Figured since these things are virtually impossible to get here, I'd better take care of it, lol!
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Originally Posted By Mister_Donut:
Do you guys clean your SF4P often or just let it cake up and clean it whenever you get around to it? The training can did this, can't imagine how bad it would get with a real can on it: https://4.bp.blogspot.com/-ocaoRYfUdTg/WhpI7cVvpOI/AAAAAAAArNY/T_xpXDX279EEp1Zg9s_WwhEU5XRSCm5UACKgBGAs/s1600/PB252780.JPG View Quote View All Quotes View All Quotes Originally Posted By Mister_Donut:
Originally Posted By MILSPEC556: Lots of carbon buildup thanks to stealthguy and his stupid Surefire can. https://4.bp.blogspot.com/-ocaoRYfUdTg/WhpI7cVvpOI/AAAAAAAArNY/T_xpXDX279EEp1Zg9s_WwhEU5XRSCm5UACKgBGAs/s1600/PB252780.JPG |
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Squire
Without blood, it doesn't count! I survived ARFbortion2016 and all I got was this stupid sigline |
Originally Posted By krdt:
The OAL is a little over 27", so it's VFG time :D! View Quote SBR/Pistol laws are stupid as shit. |
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