Description
The Sons of Liberty Gun Works Scalper Bolt Carrier Group is a Mil-Spec BCG with OCKS (Optimized Carrier Key Screws) and the Scalper logo laser engraved on the bolt carrier.
Caliber: 5.56
Bolt:
- Precision machined from Carpenter Technology No. 158 alloy
- Heat Treated
- Shot peened
- Individual high pressure/proof tested (HPT)
- Full Auto test fired
- Individual magnetic particle inspection (MPI)
Extractor:
- Precision machined from 4340 tool steel
- Heat treated
- Shot peened
Extractor Retaining Pin:
- Precision machined and ground S7 Tool Steel
- Manganese phosphate
- Heat treated
- Shot peened
Extractor Spring:
- Springs/Sprinco 5 coil, ASTM Grade A401 Chrome Silicon wire stock
- Heat treated
- Stress relieved, Molybdenum-Disulfide infused
- Cryogenic processed
- Mil-spec black insert/synthetic elastomer extractor buffer
Ejector:
- S7 Tool Steel
- Heat treated
- Shot peened
- Manganese phosphate
Ejector Spring:
- Heat treated
- Mil Spec
Gas Rings:
- Standard stainless steel
Bolt Carrier:
- Machined from AISI 8620 aircraft alloy
- 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
- Heat treated, hard chrome internal
- Manganese phosphate
- Permatex sealed
- Grade 8 OCKS Modified Key Screws
Cam Pin:
- Precision machined 4340 chromoly steel alloy
- Heat treated
- Manganese phosphate
- Solid film lubricant applied
Firing Pin:
- Precision machined 8640 steel alloy
- Heat treated
- Hard chrome plate
Firing Pin Retaining Pin:
- Precision machined from 1038 carbon steel
- Heat treated
- Manganese phosphate
