Made for 7.62X51 / 308 Cal
9310 Hardened Steel Bolt, 17-4 Stainless Steel Firing Pin (Heat treated to H900 Condition)
The group comes fully assembled with properly torqued and staked gas key
8620 carrier and gas key.
Made in the USA
HPT/MPI Tested and Marked
Hardened extractor S7 tool steel.