This m5.308 / 7.62 nickel boron bolt carrier is an eye catching addition to your ar build.It features a mil-spec dimensions and coating, is made of steel, and a forward assist serrations.Included is a bolt carrier, complete bolt, firing pin, cam pin, and a retaining pin. Finish: Nickel Boron Type: Bolt Carrier Group Model: M5 Size: 308/7.62 Jun 11, 2017 - Details The Aero Precision .308 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. AERO PRECISION 308 AR M5 LOWER RECEIVER | Brownells. The FailZero EXO Nickel Boron BCG features an M16 style cut carrier machined from 8620 carpenter...Nickel Boron M16 Carrier: The Carrier is made of 8620 steel with a Bolt made of 9310 steel. coated with Nickle Boron and includes Cam Pin, Firing Pin and Firing Pin Retainer. 620.200.2647 [email protected]
A This Aero Precision 5.56 Bolt Carrier Group features a high polish Nickel Boron finish andA has the advantage of using great materials such as 8620 tool steel for the carrier and 9310 steel for the bolt body. The tool steel extractor on the bolt also has a mil-spec extractor spring O-ring insert made of black Viton.