Modified PSA Full Auto AR-10 BCG (.308/7.62) Black Nitride
$249.99
Our modified Palmetto State Armory PA10 .308 Nitride Bolt Carrier Group Full Auto AR-10 Bolt Carrier Group .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a Black Nitride finish, is MPI/HPT and includes an added weight in the tail of the Bolt Carrier to slow cyclic rate as well as felt recoil.
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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.
Additional 2.5 ounce weight installed and pinned inside bolt carrier tail to slow cyclic rate as well as felt recoil.
Additional CNC milling to belly of BCG ensures engagement of AR-10 Auto Sears for registered full auto Lower Receivers.
Finish: Black Nitride – advanced lower friction coating that minimizes the need for lubricants and cleaning
Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
Firing Pin: Machined from 8740 steel and hard chrome coated
Forward Assist serrations
Carrier fits AR .308 compatible style AR Uppers and Rifles
Bolt Features:
Material: Case Hardened 9310 Steel
Finish: All bolt components are shot peened and black nitride coated
Extractor: Machined from 4340 Steel with double o-rings and double springs
Magnetic Particle Inspected and High Pressure Tested
High pressure bolt – external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070″
Multi-caliber Bolt designed to function with .308 and 7.62×51 .308 based cartridges.
