B5 Systems Modular Picatinny Stock Coyote Brown

B5 Systems Modular Picatinny Stock Features Engineered to mount directly to rear 1913 Picatinny interfaces this stock eliminates the need for a traditional buffer tube making it ideal for use with monolithic bolt carriers and short-stroke piston setups. The skeletonized body minimizes weight without compromising structural integrity and its fixed length of pull provides a consistent repeatable shoulder position. Constructed from high-strength polymer and reinforced with rugged alloy hardwa