Our modified Palmetto State Armory PA10 .308 Nitride Bolt Carrier…

Features: 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. BCG Includes: Bolt carrier Complete bolt Firing pin Cam pin Retaining pin Made in the USA.