BCM MK2 5.56mm Upper Receiver Group

Overview You get what you pay for, especially when it comes to rifles. While there is a point of diminishing returns, BCM does an excellent job of balancing price, performance, quality, and reliability. The enhanced MK2 upper receiver features a relocated forward assist and unmatched rigidity. Pair this with the BFH barrel and the legitimately Mil-Spec bolt carrier group, and you have a solid performer that can keep up with whatever you throw at it. This receiver group features BCM’s MCMR handguards that are well-proven for being strong, lightweight, and rigid, making these uppers ready for IR lasers right out of the box without worrying about rail shift. Lastly, an often skipped-over feature is BCM’s thermal fit tolerances on both the handguard and barrel extension. This not only provides superior fit and finish but also increases service life and overall consistency. This upper does not include a charging handle, you will need to purchase one separately. We recommend the Radian Raptor. What’s Included MCMR MODELS 1x BCM Upper Receiver with BCG 1x M-LOK Picatinny section 1x BCM M-LOK QD mount QRF MODELS 1x BCM Upper Receiver with BCG 14.5″ models are not pinned and welded from the factory, and the A2 device that comes with these uppers is not long enough to do so. You’ll need a trusted gunsmith to do this once you install the muzzle device of your choice. Features Upper Features Manufactured by Bravo Company MFG, Inc. (BCM) Fully assembled, headspaced, and test-fired Features BCM’s proprietary MK2 upper receiver for enhanced rigidity Relocated forward assist for easier charging handle access BCM cold hammer forged barrel (BFH) M4 feed ramp barrel extension and upper receiver for reliable feeding T-marked upper receiver for easy configuration of tactical accessories USGI 1/7 twist rate for versatility with various ammunition Mil-Spec barrel steel (Certified Mil-B-11595E) for strength and durability Chrome bore and chamber for enhanced chambering, extraction, and reliability Manganese phosphate barrel finish for corrosion resistance 5.56 NATO Chambers for compatibility with military and high-quality ammunition HPT / MP Inspected barrels for quality assurance and flaw detection Bolt Carrier Features BCM (MPI) complete bolt carrier group for AR-15, M16, or M4 Parkerized exterior with chrome-lined inside carrier Machined to USGI specifications, Full Auto Profile M16/M4 carrier with Mil-Spec chrome-lined gas key Gas key heat-treated and chrome-lined, securely fastened with grade 8 fasteners Bolt assembly machined from Mil-Spec Carpenter No. 158 steel, shot peened Includes tool steel extractor and ejector, BCM Extractor Spring HPT (High-Pressure Tested) and MPI (Magnetic Particle Inspected) BCM test fires for function before shipping Warranty: Covered by BCM’s manufacturer warranty. Warranty service is provided by BCM. Made in the USA. Specs Specifications MK2 16″, MCMR-13, BFH Barrel – ELW Profile, MidLength Gas MK2 11.5″, MCMR-10, BFH Barrel – Government Profile , Carbine Gas Weight 3 lb 11.7 oz with Radian Raptor 3 lb 7.8 oz with Radian Raptor Weight, Standard Lower – No Stock 5 lb 7.2 oz with Radian Raptor 5 lb 3.3 oz with Radian Raptor Weight, Standard Lower – Law Folder, No Stock 6 lb 2.3 oz with Radian Raptor 5 lb 14.4 oz with Radian Raptor Length, Upper Only 24.62″ Muzzle Device to End Of Receiver 19.93″ Muzzle Device to End Of Receiver Length, Standard Lower – No Stock 31.87″ Muzzle Device to End Of Carbine Extension 27.18″ Muzzle Device to End Of Carbine Extension Length, Standard Lower – Law Folder, No Stock 33.25″ Muzzle Device to End Of Carbine Extension 28.56″ Muzzle Device to End Of Carbine Extension Length, Standard Lower – Law Folder, No Stock (Folded) 26.56″ Muzzle Device to Furthest point 21.87″ Muzzle Device to Furthest point