ATA15 Bolt Carrier Group (MPI/HPT) - M16 Auto

The ATA Bolt Carrier Group (M16 Auto) comes fully assembled and ready for your AR-15, M16 or M4. Machined to USGI specification and includes a properly stacked Mil-Spec gas key. All Bolt Carrier Groups (BCG) are magnetic particle inspected (MPI), high pressure tested (HPT), and test fired. As with all American Tactical Arms Products, our BCGs are backed by our limited lifetime warranty.

Specifications:

• Caliber/Guage: .223/5.56
• Carrier Style: Mil Spec 8620 Steel
• Plateform: AR-15, M16, M4
• Bolt Finish: Black Nitride
• Bolt Material: MPI 9310 Bolt, Shot Peened, Hard Turned/Ground
• Carrier Finish: Black Nitride
• Gas Key: Properly Staked Gas Key
• Magnetic Partical Inspection: YES
• High Pressure Tested: YES