XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 24.75in 16.5in Carbine 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 24.75in 16.5in Carbine 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. These XTS complete uppers do not include the Bolt Carrier Group. Specifications for XTS AR-15 16in 223/5.56 Complete Upper Receiver w/o BCG: Manufacturer: XTS Caliber: .223 Remington Overall Length: 24.75 in Barrel Length: 16.5 in Gas System Length: Carbine Length Barr