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Sons of Liberty Gunworks AR15/M4 5.56 (SCALPER) *EXCLUSIVE*Bolt Carrier Group
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SONS OF LIBERTY GUN WORKS EXCLUSIVE SCALPER BCG
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Your Price:
$169.99
Part Number:
SOL-EX-BCG
Availability:
Out of Stock.
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Description
This Exclusive BCG is something special. SOLGW does an amazing job putting the customer first. There are no shortcuts taken, every important box is checked, and re-checked. While this is 100% a factory standard SOLGW bcg, what makes this slightly different than their's is not only the Scalper logo beautifully laser etched on the carrier, but also the use of OCKS (Optimized Carrier Key Screws) as a upgrade added for additional peace of mind in terms of carrier key security. Below is the complete breakdown, being completely transparent is something they very much pride themselves on!
Sons of Liberty Gun Works Bolt Carrier Group HPT/MPI
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 qualty 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 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:
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
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