BCM MK2 MCMR13 Complete Upper Receiver 5.56mm Nato 14.5"

MEET THE NEW WAR

Upper receivers with baked in carry-handles and iron sights have been relegated to history. Optics are now synonymous with forward deployed combat carbines, featuring modular "optics ready" flat top upper receivers. Driven by a sense of urgency to improve lethality and save American lives in real-time, this flat top innovation has inadvertently introduced a degradation in the rigidity of the upper receiver, with the weakest point being the area around the ejection port. Redesigned by lessons learned in combat since 9/11, the BCM MK2 Upper Receiver is built with up to 30% more rigidity than the current Mil-Spec M4 upper receiver without sacrificing interoperability for a mere additional 1/3 ounce of weight.

The MK2 Upper Receiver also retains all USGI components in assembly and works with all USGI bolt carriers, charging handles and barrel assemblies.Fine tuning the positioning of the forward assist creates additional clearance for right hand sided charging handle manipulation and clearance for end plate mounted slings.

Positive effect on target

In addition to weapon optics, suppressors have also become standard in modern combat operations. Added gas expansion areas and new channels added around the charging handle opening, vent gas away from the end user's face, reducing distractions when employing the weapon system with a can. Forged from 7075-T6, the BCM MK2 Upper Receivers retain a form following grain structure which maximizes achievable strength.All of these improvements come without affecting the manual of arms employed in manipulating a Mil-Spec upper receiver.

PROFESSIONAL GRADE - LIFE SAVING TOOLS

Manufactured by Bravo Company MFG, Inc. (BCM) by professional gunsmiths

These Complete Upper Receiver are designed for shooting professionals and responsible civilians with the Mil-Spec features for the demands of their duty. They are fully assembled, headspaced, and test fired.

SPECIFICATIONS

BCM® MK2 UPPER RECEIVER

This proprietary design offers enhanced rigidity over the USGI product.  The increased rigidity limits barrel deflection which aids in consistency/accuracy.   Less flex also reduces premature damage, wear, and failure of bolt lugs from misalignment.  A gas expansion chamber is machined above the charging handle track, combined with dual vents machined at the rear (each side, above charging handle latch) help to redirect and vent gas away the shooters face. U.S. Patent Numbers: 10670355, 10677549, D888182

• Receiver Machined from Aluminum Forgings 7075-T6 and Hardcoat Anodized per MIL-A-8625F, Type III, Class 2
• M4 Feed Ramp 
• Hard Coat Anodized per Mil-A-8625F, Type III, Class 2

BCM® BOLT CARRIER GROUP

• Chrome Lined Carrier (Full Auto Profile)
• Chrome Lined Gas Key Hardened to USGI Specifications, w/ Staked Grade 8 Fasteners per MIL-SPEC
• Machined from Mil-Spec Carpenter No. 158® Steel to USGI specifications
• HPT/MPI (High Pressure Tested/Proof) · (Magnetic Particle Inspected)
• Shot Peened
• Tool Steel Extractor w/ BCM® Extractor Spring
• Black Extractor Insert
• Heat treated
• Superfinished Carrier Body
• Forward Assist Serrations

BCM® BARREL

• Independently Certified MIL-SPEC 11595E Barrel Steel, Manganese Phosphate Barrel Finish on Entire Barrel
• 14.5" Government Profile Barrel 1/7 Twist
• M4 Feed Ramp Extension
• USGI 5.56mm NATO Chrome Lined Bore and Chamber
• Mid Length Gas System
• HPT/MPI(High Pressure Test) (Magnetic Particle Inspected), per MIL-SPEC
• Muzzle thread: 1/2-28 UNEF