Product Line: PA-10
Platform: AR-10
Includes: 308 Bolt Carrier Group
Finish: Nitride
PSA PA-10 .308 Nitride Bolt Carrier Group. 9310 steel bolt assembly with extra strength extractor springs that is nitride for increased durability. 8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners.