Description
Guntec bolt carrier group ar10.308 mil-spec nitride
FEATURES:
-Caliber: 7.62×51/.308
-Nitride Treated
-HPT & MPI tested
-9310 Hardened Steel Bolt
-8620 carrier & gas key
Other Features: 8620 steel bolt carrier 9310 steel bolt mil-spec ar10 design made in usa
