Bolt Carrier Group SOLGW 5.56 158 Carpenter SP/HPT/MPI
$179.00
Out of stock
Sons of Liberty Gun Works –
We look at the bolt carrier group as the heart of the gun. 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, ejecting…all of it begins with the bolt carrier group.
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
Find out why this is the Best Bolt Carrier Group in the industry. Son’s Of Liberty Gun Works
Interview with Mike Mihalski on AR Build Junki
| Weight | 0.25 lbs |
|---|---|
| Dimensions | 3 × 1 × 1 in |
- Reviews
- Questions
USBolt Carrier Group
Great item as always from SOLGW. Built like a tank.
USSOLGW knocking it out of the park again.
Waiting to receive my 6 mm max complete uppers a 20 inch and a 14.5 inch. The bolt carrier group and a charging handle. We’ll go into these when I receive the uppers. Good stuff man!
USBad *** Looking BCG
Haven’t installed it yet, but I’m looking forward to purchasing more products from SOLGW. 100% positive this Bolt will help achieve exactly what I’m looking for on this new ground up build in progress. Compared to other bolts this one just looks and feels rock solid. Thanks.
USGreat BCG!
Recently I have purchased SOLGW BCG and was impressed with the quality which stands next to Geissele, Bravo Company and other reputable companies utilizing 158 Carpenters steel but offering more affordable option for buyers. I would only wish that more finishes would be offered by SOLGW.
USSOLGW 5.56 BOLT CARRIER
I was just a little disappointed when I placed my order for a number of items and I was charged $199 for the BCG that was advertised for $175 on the website. I initially thought that maybe I had mistakenly ordered the BCG with the OCKS gas key screws, but it was the standard SOLGW BCG. No matter, as I bought it for a backup for my Colt M4A1 SOCOM. The BCG appears to be very well built and very high quality.
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