XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 16.5in 7.5in Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 16.5in 7.5in Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish. 56 16.5in 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 7.5in 223/5.56 Complete Upper Receiver w/o BCG: Manufacturer: XTS Caliber: .223 Remington Overall Length: 16.5 in Barrel Length: 7.5 in Barrel Profile: SOCOM Gas System Length: Pistol Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Muzzle Device: A2 Flash Hider Finish: Nitride Color: Black Gun Model: AR-15 Fabric/Material: Stainless Steel Gas Block Journal Size-Diameter: .750 in Handguard Length: 7 in Handguard Style: Round Rail Gun Rail: M-LOK Gun Make: AR Platform Barrel Material: 4150 Chrome Moly Vanadium Weight: 15.1 oz Bolt Carrier Group Included: No Charging Handle Included: MIL-SPEC Magazine Included: No Condition: New Mount Type: M-LOK Country of Origin: USA Package Contents: XTS AR-15 7.5in 223/5.56 Complete Upper Receiver w/o BCG Anachor Upper Receiver 5.56 NATO Barrel 7.5in XTS Charging Handle XTS Forward Assist XTS Ejection Port Cover 7in M-LOK Black Gas Block Gas Tube Bird Cage Muzzle Brake What firearm models does the manufacturer say XTS AR-15 7.5in 223/5.56 Complete Upper Receiver w/o BCG is compatible with? The manufacturer says that XTS AR-15 7.5in 223/5.56 Complete Upper Receiver w/o BCG is compatible with AR-15XTS XTS-CU-7BK: Complete Upper Receiver w/o BCG AR-15 223/5.56 16.5in 7.5in Pistol Length 1-7 Twist 1/2x28 Thread M-LOK Handguard Bird Cage Black Nitride Finish Black