• Caliber: 5.56 Nato
• Manuf. Process: Button Method
• Twist Rate: 1: 7
• Muzzle Thread: 1 ⁄ 2× 28 TPI (Threads Per Inch)
• Material: Chrome Moly Vanadium
• Outside Finish: Mil-Spec Heavy Phosphate
• Inside Finish: Chrome
• Gas System: Carbine
• Manufacturer: APEX ARMS INC
