AT M16 Nitride Complete BCG

These are our basic milspec M16 nitrided complete bolt carrier group. The carriers are case-hardened 8620 steel, coated via salt bath nitrocarburizing, and the gas keys are correctly staked 4140 steel. They also feature a true Mil-Spec, precision ground and shot-peened bolt, made from case-hardened case-hardened 9310 steel. These are proudly made in the USA and feature the Allstar Tactical logo laser engraved on the side.

Features:

• Case-Hardened 8620 Steel Carrier
• Case-Hardened 9310 Steel Bolt Assembly
• Properly Staked 4130 Steel Gas Key
• Hard Chrome 8740 Steel Firing Pin
• Hardened 4340 Cam Pin
• 4340 Steel Extractor w/ Mil-Spec Extractor spring and O-Ring
• Assembled Complete