Guntec USA AR .308 Caliber Nickel Boron Bolt Carrier Group Mil-spec BCG

Guntec USA AR .308 Cal Nickel Boron Bolt Carrier Group Mil-spec BCG



- Made for 7.62X51 / 308 Cal

- Nickel Boron Finish

- HPT/MPI Tested and Marked

- 9310 Hardened Steel Bolt,

- 17-4 Stainless Steel Firing Pin (Heat treated to H900 Condition)

- 8620 carrier and gas key.

- Hardened extractor S7 tool steel.

- The group comes fully assembled with properly torqued and staked gas key

- Made in the USA

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