Smith & Wesson

Smith&Wesson's M&P15 Complete Upper Receiver Assembly is manufactured on the M&P15 modern sporting rifle platform. It features a 10" free-float, quad handrail, spring-loaded flip up MBUS front and rear sights, and a 5R rifling barrel with an A2 flash hider and 1/2-28 threads. It is constructed of impact resistant polymer which provides light weight and resists operational abuse.