Introducing the extraordinary Exclusive BCG by SOLGW. With a strong focus on customer satisfaction, SOLGW goes above and beyond to deliver a remarkable product. No compromises are made as every crucial aspect is meticulously examined and double-checked. While this BCG maintains SOLGW’s impeccable factory standards, it boasts a unique feature that sets it apart from the rest—a beautifully laser-etched Lone Star logo on the carrier. Moreover, for enhanced carrier key security and peace of mind, the Exclusive BCG comes with the OCKS (Optimized Carrier Key Screws) upgrade. SOLGW takes pride in being completely transparent, and we provide you with a comprehensive breakdown of the BCG below.
Sons of Liberty Gun Works Bolt Carrier Group HPT/MPIÂ Bolt:
- 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)
- 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 (all 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:
- Â Machined from 4130 chromoly steel alloy per ASTM A108/A322-13
- Heat treated, hard chrome internal
- Manganese phosphate
- Permatex sealed
- Grade 8 Â OCKS Modified Key Screws
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:
- Â 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
Ramon Santana Vazquez (verified owner) –
Nice bolt
rick_aleman5513 (verified owner) –
IMHO best price to performance
Jon Holland (verified owner) –
Great collaboration BCG from awesome companies. This will go perfectly in the Lone Star lower builds I bought from BTO.
Ramon Santana Vazquez (verified owner) –
Lo recomiendo!! De los mejores boltcarrier que puedes adquirir!!