Sons of Liberty Gun Works Scalper Bolt Carrier Group 5.56 from Desert Tactical Solutions near Vail, Arizona, USA

You can find the Sons of Liberty Gun Works Scalper Bolt Carrier Group 5.56 here Fast $9.95 shipping! Orders over $200 ship for free!

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