Sons of Liberty Gun Works

Sons Of Liberty Gun Works 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.

Rebellious Stripes Marked

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

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

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

Gas Key:

Machined from 4130 Chromoly steel alloy per ASTM A108/A322-13

Heat-treated; hard chrome internal

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

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

Find out why this is the Best Bolt Carrier Group in the industry. Son’s Of Liberty Gun Works