SOLGW 5.56 Bolt Carrier Group 158 Carpenter SP/HPT/MPI

SOLGW Bolt Carrier Group (SOLGWBCG556) is the heart of the gun in the eyes of Sons of Liberty Gun Works. If the gas port is the lungs, then the bolt carrier group is the heart. It's what drives the entire gun. If you look at the AR platform's cycle of operations, everything happens around the bolt carrier group. Locking, unlocking, extracting, ejectingall of it begins with the bolt carrier group.

Notable Features Include:

• Sons of Liberty Battle Flag logo deep laser engraved
• Markings deep laser engraved (SP=Shot Peened, HP=High Pressure Tested, MP=Magnetic Particle Inspection.)
• Manganese Phosphate Finish
• Precision machined from Carpenter Technology No. 158 alloy,
• Heat treated per mil-spec,
• Shot peened per ASTM B851/SAE AMS2430S,
• Vibratory tumbled
• Individual high pressure/proof (HP)
• Full Auto test fired as an assembly
• Individual magnetic particle inspection ASTM E1444/E1444M (MP)