SONS OF LIBERTY BOLT CARRIER GROUP:
Best Bolt Carrier in the industry!
Bolt:
- Precision machined from Carpenter Technology No. 158 chrome-nickel alloy
- Heat treated per mil-spec,
- Shot peened per ASTM B851/SAE AMS2430S,
- Vibratory tumbled
- Individual high pressure/proof (HP) test
- Full Auto test fired at assembly
- Individual magnetic particle inspection ASTM E1444/E1444M (MP)
- Markings deep laser engraved (SP=Shot Peened, HP=High Pressure Tested, MP=Magnetic Particle Inspection.)
Extractor:
- Precision machined from 4340 tool steel alloy per SAE AMS6415T/AMS6484D (vs 4140)
- Heat treated
- Shot peen per ASTM B851/SAE AMS2430S
Extractor Retaining Pin:
- Precision machined and ground S7 Tool Steel
- Heat treated per ASTM A681-08
- Shot peened per mil-spec print
- Manganese phosphate
Extractor Spring:
- Tactical Springs/Sprinco 5 coil, ASTM Grade A401 Chrome Silicon wire stock
- Heat treated
- Stress relieved, Molybdenum-Disulfide infused
- Cryogenic processed (Hidden post winding)
- Mil-spec black insert/synthetic elastomer extractor buffer (nitrile-butadiene, shore hardness 80+/-5 durometer per MIL-PRF-6855)
Ejector:
- S7 Tool Steel
- Heat treated per ASTM A681-08
- Shot peened per Mil-Spec
- Manganese phosphate
- Ejector Spring:
- Heat treated
- Mil Spec
Gas Rings:
- Standard stainless steel per Mil-Spec X3
Carrier:
- Machined from AISI 8620 aircraft quality alloy per ASTM A108/A322-13
- Full auto profile
- Heat-treated
- Carburized/strain relieved, hard chrome bore
- Precision ground gas key interface
- Sons of Liberty Battle Flag logo deep laser engraved
- Manganese phosphate
Gas Key:
- Machined from 4130 Chromoly steel alloy per ASTM A108/A322-13
- Heat-treated; hard chrome internal
- Manganese phosphate
- Permatex sealed
- Grade 8 hex screws torqued and staked Hidden per mil-spec
Cam Pin:
- Precision machined 4340 Chromoly steel alloy per SAE AMS6415T/AMS6484D
- Heat-treated/processed per mil-spec
- Manganese phosphate
- Solid film lubricant applied and cured per mil-spec
Firing Pin:
- Precision machined 8640 steel alloy
- Heat treated/processed per mil-spec
- Hard chrome plate
Firing Pin Retaining Pin:
- Precision machined from 1038 carbon steel
- Heat-treated/processed per mil-spec
- Manganese phosphate
