The XTS 16.5" .223 Wylde assembled upper gives you a barreled AR-15 upper ready to drop a bolt carrier group and complete. The .223 Wylde chamber runs both .223 Remington and 5.56 NATO, and the 15" M-LOK free-float handguard leaves plenty of room for accessories. Features: Assembled AR-15 upper receiver 16.5" barrel with .223 Wylde chamber (runs .223 and 5.56 NATO) 15" M-LOK free-float handguard Includes XTS charging handle, forward assist, and dust cover Muzzle device installed Black finish This upper does NOT include a bolt carrier group. Add a 5.56/.223 BCG to complete it before use.