Our groundbreaking MCR ® (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963.

MCR® DUAL-FEED™ UPPER (MCR-060) $6,399.99. Add to Cart. Add to Compare ; MCR® DUAL-FEED UPPER COMPACT (MCR-060S) $6,399.99. Add to Cart. Add to Compare ; MCR® DUAL-FEED™ UPPER M-LOK® (MCR-060M) $6,399.99. Add to Cart. Add to Compare ; MCR® DUAL-FEED™ UPPER M-LOK® COMPACT (MCR-060MS) ...

The MCR060 is a robust, ergonomic and lightweight upper receiver assembly that is designed to fit MIL-Spec quality AR-15, M16 and M4 type lower receiver assemblies.

Specifically designed for responsible armed citizens, law enforcement and professional security personnel who wish to upgrade their rifle or carbine to MCR performance and capability standard features include gas-piston operation for extreme reliability in adverse conditions a 16.25" quick-change (3 seconds) barrel system and a MIL-STD 1913 co ...

Made from 7075-T6 heat-treated aluminum with CERRO forging. Slab side cuts make it a thin as possible profile and with a ambidextrous bolt release for perfect use with the MCR® DUAL-FEED™ UPPER M-LOK® COMPACT (MCR-556-DFRMS) or ARES SHRIKE belt-fed uppers.

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2024年5月24日 · I came up with the idea of combining a Franklin Armory binary trigger with the upper to make a civilian legal rapid-fire belt-fed. I had great success with binary triggers on various AR-15 builds in the past and thought this was a cool concept. I ordered my MCR-060 upper from Brownells and set it up with the Franklin Armory Libertas lower.

Our groundbreaking MCR ® (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963.

Our groundbreaking MCR ® (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963.

Our groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963.