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CMMG, Inc. MK4 RCE AR-15 .223 Rem/5.56 NATO 16" 416 Stainless Steel Barrel SV Muzzle Brake Flat Top Free Float Keymod Handguard Upper Receiver Black 55B5949
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Brand: CMMG, Inc. 55B5949
Item: 2-CMMG55B5949
UPC: 815835016641

This is an excellent new upper receiver assembly from CMMG. The configuration is perfect for your latest DMR or SPR build. The quality barrel and proprietary free float keymod handguard will have your accuracy at its highest.

The Mk4 RCE is one of CMMG's premiere uppers. The Mk4 RCE features a 16" 416 stainless steel medium taper profile barrel, CMMG's own SV muzzle brake and RKM14 KeyMod hand guard.

Specifications and Features:
Caliber: .223 Remington and 5.56 Nato
Barrel: 16” medium weight taper profile
Muzzle: CMMG SV brake, threaded 1/2-28" TPI
Hand Guard: CMMG RKM14 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type


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Customer Reviews

Most Helpful Customer Reviews

0 of 0 people found the following review helpful
5.0 Rating Excellent upper - 4/18/2014
Reviewer: Mason
Excellent fit and finish on this upper. I placed it on a dpms lower with no problems. Added all my extra goodies with no hang ups. Just waiting to get some range time!
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0 of 0 people found the following review helpful
5.0 Rating Exactly what I hoped for.. - 6/13/2014
Reviewer: Joe
I bought a Bushmaster A2S carbine used and attempted to install a rifle length handguard and low profile gas block on it.. I ended up going to a gunsmith who, in short order told me that he'd broken my upper.. What to do? Enter CMMG.. This upper is absolutely fantastic.. Perfect fit and spectacular quality.. Love the weight AND the looks too.. I would recommend this upper to ANYONE.. It is EXACTLY what I'd hoped for and is definitely worth the price..
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CMMG, Inc. MK4 RCE AR-15 .223 Rem/5.56 NATO 16 416 Stainless Steel Barrel SV Muzzle Brake Flat Top Free Float Keymod Handguard Upper Receiver Black 55B5949
CMMG, Inc. MK4 RCE AR-15 .223 Rem/5.56 NATO 16 416 Stainless Steel Barrel SV Muzzle Brake Flat Top Free Float Keymod Handguard Upper Receiver Black 55B5949
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