User Panel
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 Bhavin22:
Lookin good. Get rid of the cqbr b2? View Quote |
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Originally Posted By hemiman:
Wilcox mounted and fresh coat of green...just waiting on lower. http://i.imgur.com/a3r8agF.jpg http://i.imgur.com/tL71I72.jpg View Quote Now I need a can of green. That looks great. What paint? |
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Code word is Yellow Umbrella.
"All welchers should be removed from the EE"-Aimless |
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Originally Posted By hemiman:
Rust-Oleum camo Forest Green View Quote View All Quotes View All Quotes Originally Posted By hemiman:
Originally Posted By Tigwelder1971: @hemiman Now I need a can of green. That looks great. What paint? I did Rust-Oleum Army green. Looks better on duck boats. |
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Code word is Yellow Umbrella.
"All welchers should be removed from the EE"-Aimless |
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Originally Posted By AZ_SBR: Thanks man. Yes, actually right after I sold the B2 CQBR URG, I first went with a Geissele MK8/10.3" DD barrel/Colt upper, but then when I started getting pulled in the direction of an LPVO, I was like yeah, I want something longer. Sold it and put together the 14.5" and it's becoming a recce of some sort. Mount and glass are next. View Quote |
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Originally Posted By FDEinAZ:
https://i.postimg.cc/DyQh1brD/CQBR.jpg Side note: are there any good free photo hosting sites that don't degrade quality? View Quote |
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We are not citizens, We are suspects.
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Originally Posted By billytehbob:
Well, if it ain’t leaking, there’s nothing in there to leak View Quote View All Quotes View All Quotes Originally Posted By billytehbob:
Originally Posted By SecretSquirell:
I don't think I ever rode in a bird that didn't leak. I was getting dripped on by very hot oil while en route to a mission one day. I was non-plussed. That kinda looks like Flannel Daddy (Garand Thumb) dressed up as him lol. |
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Without blood, it doesn't count!
"A gun, like any other source of power, is a force for good or evil, being neither in itself, but dependent upon those who possess it." |
Originally Posted By hemiman:
Wilcox mounted and fresh coat of green...just waiting on lower. http://i.imgur.com/a3r8agF.jpg http://i.imgur.com/tL71I72.jpg View Quote |
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Without blood, it doesn't count!
"A gun, like any other source of power, is a force for good or evil, being neither in itself, but dependent upon those who possess it." |
Originally Posted By FDEinAZ:
https://i.postimg.cc/DyQh1brD/CQBR.jpg Side note: are there any good free photo hosting sites that don't degrade quality? View Quote |
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Without blood, it doesn't count!
"A gun, like any other source of power, is a force for good or evil, being neither in itself, but dependent upon those who possess it." |
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Thanks, I’ve been using post image but just felt the quality after upload didn’t hold. Maybe I’ll try imgur again.
And dang I want a 553 now |
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We are not citizens, We are suspects.
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Originally Posted By ECPrevatte:
Flickr pulled a nasty bait and switch. Left a bad taste. Imgur is the easiest I think besides Flickr. https://live.staticflickr.com/65535/47805316532_8af3d0c957_b.jpg View Quote |
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I survived the California MagRush 3/29/19 - 4/5/19
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De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15&16' Afganistan: 09,10,11',14',17',18'&19' |
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Originally Posted By 762hunter2:
Cool cats still running razor 1-6’s https://i.imgur.com/JpWBGS9.jpg G17 with alg magwell as well View Quote We sure that's clone correct?! I love the Bravo stock. |
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Originally Posted By hemiman:
AND a B5 --Bravo-- stock?! We sure that's clone correct?! I love the Bravo stock. View Quote View All Quotes View All Quotes Originally Posted By hemiman:
Originally Posted By 762hunter2:
Cool cats still running razor 1-6’s https://i.imgur.com/JpWBGS9.jpg G17 with alg magwell as well We sure that's clone correct?! I love the Bravo stock. |
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View Quote It's cool to see how these actually get setup in the field to suit that particular individuals preferences. |
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Hi guys.
I’m seeing all kinds of grips on the mk18’s, a2, a1, but are they also using ergo and magpies and if so which magpul? Also on the rear site is a kac gtg or only matech? Thanks guys. |
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Originally Posted By Larain60:
Hi guys. I’m seeing all kinds of grips on the mk18’s, a2, a1, but are they also using ergo and magpies and if so which magpul? Also on the rear site is a kac gtg or only matech? Thanks guys. View Quote clonerifles.com Google Doc |
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Originally Posted By Larain60:
Hi guys. I’m seeing all kinds of grips on the mk18’s, a2, a1, but are they also using ergo and magpies and if so which magpul? Also on the rear site is a kac gtg or only matech? Thanks guys. View Quote CD |
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De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15&16' Afganistan: 09,10,11',14',17',18'&19' |
Are the KAC 600M and the Matech distance calibrations suitable for the 10.3" barrel? If not, is there any documentation on what ACTUAL real world distances correspond to the sights' selector markings?
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Originally Posted By Pneumagger:
Are the KAC 600M and the Matech distance calibrations suitable for the 10.3" barrel? If not, is there any documentation on what ACTUAL real world distances correspond to the sights' selector markings? View Quote CD |
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De Oppresso Liber
Iraq: 91,03,04,05,06,08,09,15&16' Afganistan: 09,10,11',14',17',18'&19' |
I'll have to measure the sight post height change at each setting when I finally get one.
This is neat: According to Strelok an EXPS 3-4 has the following calibrations for it's 4 dots when shooting 62gr Fusion MSR at 2530fps: 200yds (zero), 350yds, 450yds, 550yds. That's convenient. |
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Originally Posted By Pneumagger:
I'll have to measure the sight post height change at each setting when I finally get one. This is neat: According to Strelok an EXPS 3-4 has the following calibrations for it's 4 dots when shooting 62gr Fusion MSR at 2530fps: 200yds (zero), 350yds, 450yds, 550yds. That's convenient. View Quote |
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Originally Posted By vanquishings:
Anyone got a weight on the androcorp 10.3 crane barrel? They might have the worst response time I've encountered. Need a barrel swap and I'm trying to choose between this and a cut down SOCOM. Leaning socom just because it's disheartening that a company can't reply to an email or voicemail after two weeks. View Quote |
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This 553 is tempting me
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Originally Posted By Puppuccino:
This 553 is tempting me View Quote |
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Originally Posted By Puppuccino:
This 553 is tempting me View Quote Contrary to what you read about the 553's, I sent one back to Eotech in December for warranty repairs/reticle fade. S/N Starts with an A on the later 533's hence the no SU-231 markings. Civilian sold 553's all had 7xx,xxx s/n's. It came back recharged with nitrogen and just as bright as a new exps 3-0. |
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Originally Posted By krdt:
Hell, more than that, I wish I'd bought at least one more of the 6920 OEM2s from AU when they were $605. Depending on how you want to look at it, I got the lower for free basically on that deal, lol. Let's put it this way... Colt upper, lower and BCG for $245... View Quote View All Quotes View All Quotes Originally Posted By krdt:
Originally Posted By Tigwelder1971:
Originally Posted By krdt: Should've gotten a few more of the Brownells lowers when I had the chance. Let's put it this way... Colt upper, lower and BCG for $245... I dont think we will see them prices ever again. |
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Originally Posted By wissota4:
What wheels have a Detroit? View Quote View All Quotes View All Quotes |
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Without blood, it doesn't count!
"A gun, like any other source of power, is a force for good or evil, being neither in itself, but dependent upon those who possess it." |
Originally Posted By wissota4:
Not anymore they don't. Only Detroit's I've dealt with are in 113's and maybe mrls.. tracks tho. And yes, leaky. Lol View Quote View All Quotes View All Quotes Originally Posted By wissota4:
Originally Posted By DontBuryMe: The M977 series HEMTT for sure. Not sure of others. Only Detroit's I've dealt with are in 113's and maybe mrls.. tracks tho. And yes, leaky. Lol There was an end loader that had a Detroit but I can't remember the model, though I never worked on one. |
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Without blood, it doesn't count!
"A gun, like any other source of power, is a force for good or evil, being neither in itself, but dependent upon those who possess it." |
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Oh I’m sorry, I thought this was America!
MI, USA
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Just put this together. Still a couple pieces needed. The question I have is what can to top it off with? I have a Vero Beach NT4 in jail right now but I cant decide if I want to put it on this upper or build a Mod 0 and scratch my Surefire itch.
Attached File |
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Originally Posted By 762hunter2:
Trijicon Accupoint and Larue SPR-E makin the rounds https://i.imgur.com/APOffSY.jpg View Quote |
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Originally Posted By JLAudio: Nice. Scoop it! Its likely made after 2014(no su markings), which means its right on the cusp of being out of warranty/non serviceable. Contrary to what you read about the 553's, I sent one back to Eotech in December for warranty repairs/reticle fade. S/N Starts with an A on the later 533's hence the no SU-231 markings. Civilian sold 553's all had 7xx,xxx s/n's. It came back recharged with nitrogen and just as bright as a new exps 3-0. View Quote Attached File |
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Originally Posted By Puppuccino:
I emailed EOTech with the s/n to see if they’d repair it, here’s their reply: https://www.AR15.Com/media/mediaFiles/488662/EF800385-BB2D-4CAD-8F02-568C651CC9BF_png-952813.JPG View Quote |
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Originally Posted By Puppuccino:
I emailed EOTech with the s/n to see if they’d repair it, here’s their reply: https://www.AR15.Com/media/mediaFiles/488662/EF800385-BB2D-4CAD-8F02-568C651CC9BF_png-952813.JPG View Quote |
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Just got my 10.3” Colt CQB from AU!
So, no more “C” stamped on the barrel, right? Also, should there be a manufacturing date on it? Lastly, everyone else’s I’ve seen was drenched in lube, but this one seems pretty dry...Normal? Excited to get this thing on my Colt Upper! |
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Originally Posted By smitty_007:
Just got my 10.3” Colt CQB from AU! So, no more “C” stamped on the barrel, right? Also, should there be a manufacturing date on it? Lastly, everyone else’s I’ve seen was drenched in lube, but this one seems pretty dry...Normal? Excited to get this thing on my Colt Upper! View Quote |
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