Sons of Liberty Gun Works AR-15 .223/5.56 Bolt Carrier Group – Hard Chrome

Sons of Liberty Gun Works AR-15 .223/5.56 Bolt Carrier Group – Hard Chrome

Uncompromising Quality and Performance

The Sons of Liberty Gun Works AR-15 .223/5.56 Bolt Carrier Group (BCG) is built to deliver unmatched reliability and precision. Every component in this premium BCG has undergone meticulous quality control processes to ensure optimal performance in any condition. Precision machined from top-grade materials such as Carpenter No. 158 chrome-nickel alloy for the bolt and 8620 aircraft-quality alloy for the carrier, this BCG is designed to meet and exceed Mil-Spec standards. The hard chrome finish further enhances durability and corrosion resistance, making it a perfect choice for AR-15 builds focused on high performance and long-lasting reliability.

Key Features:

• Precision Machined Bolt – Made from Carpenter No. 158 chrome-nickel alloy, heat-treated, shot peened, vibratory tumbled, and individually HP tested and MPI inspected.
• 4340 Tool Steel Extractor – Heat-treated and shot peened for superior durability and extraction reliability.
• S7 Tool Steel Extractor Retaining Pin – Heat-treated and shot peened to Mil-Spec standards.
• Tactical Springs/Sprinco Extractor Spring – Made from ASTM Grade A401 Chrome Silicon wire stock, heat-treated, stress-relieved, and cryogenic processed for exceptional longevity.
• S7 Tool Steel Ejector – Heat-treated and shot peened for consistent ejection performance.
• 8620 Aircraft Quality Alloy Carrier – Full auto profile with hard-chrome bore, precision-ground gas key interface, and Sons of Liberty Battle Flag laser engraving.
• 4130 Chromoly Steel Gas Key – Hard-chrome internal, sealed with Permatex, and secured with torqued and staked Grade 8 hex screws.
• Hard Chrome Plated Firing Pin – Made from 8640 steel alloy, heat-treated for reliable ignition.

Technical Specifications:

• Bolt Material: Carpenter No. 158 Chrome-Nickel Alloy (Shot Peened, HPT, MPI)
• Carrier Material: 8620 Aircraft Quality Alloy (Hard Chrome Bore)
• Gas Key Material: 4130 Chromoly Steel (Permatex Sealed, Torqued, and Staked)
• Extractor Material: 4340 Tool Steel (Shot Peened)
• Firing Pin Material: 8640 Steel Alloy (Hard Chrome Plated)
• Cam Pin Material: 4340 Chromoly Steel (Solid Film Lubricant Applied)

Gain unmatched reliability, durability, and precision with the Sons of Liberty BCG. Every component is crafted to exceed Mil-Spec standards and withstand extreme conditions, ensuring your AR-15 performs flawlessly.