Smith & Wesson (S&W) M&P-15 Upper Receiver Assembly – 16" 5.56 NATO (1:9 Twist)
This Smith & Wesson M&P-15 rifle upper receiver assembly is chambered in 5.56mm NATO with a 16" barrel marked 1:9 twist. The flat-top Picatinny rail is S&W marked and provides a standard mounting surface for optics and accessories.
Configuration includes an A2-style front sight base and an A2 birdcage-style flash hider. No charging handle or bolt carrier group is provided.

