This Smith & Wesson M&P15 AR-15 Carbine Upper Receiver Assembly is chambered in 5.56x45mm NATO and comes ready to fire right out of the box after installation onto any standard AR-15 lower receiver. This A3 flat-top upper receiver comes complete with charging handle, bolt carrier assembly, A2 front sight with sling swivel, bayonet lug, and threaded muzzle with flash hider. The 16" chrome lined barrel features a 1 in 9" rate of twist for exceptional accuracy. If you are looking for a reliable AR-15 carbine length upper, the M&P15 from Smith & Wesson is a great option.
Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.