Sons of Liberty Gun Works 5.56 NATO Bolt Carrier Group - Chrome

Built for the most demanding applications, the Sons of Liberty Gun Works 5.56 NATO Bolt Carrier Group (BCG) is meticulously crafted from premium materials and subjected to rigorous quality control measures. This BCG boasts a Carpenter Technology No. 158 chrome-nickel alloy bolt, 4340 tool steel extractor, and S7 tool steel ejector, ensuring exceptional strength and wear resistance.

Features:

• Bolt: Carpenter Technology No. 158 chrome-nickel alloy
• Extractor: 4340 tool steel (superior to 4140)
• Ejector: S7 tool steel
• Carrier: AISI 8620 aircraft-grade alloy
• Gas Key: 4130 Chromoly steel with hard chrome interior
• Magnetic particle inspected, high pressure tested, shot peened
• Full auto test fired at assembly
• Mil-spec and ASTM compliance
• Heat treated for optimal strength
• Hard chrome plating for corrosion resistance and smooth operation
• Precision-ground gas key interface for secure fit
• Tactical Springs/Sprinco 5 coil extractor spring
• Permatex sealed gas key
• Sons of Liberty Battle Flag logo

Each component undergoes individual high-pressure testing, full-auto test firing, and magnetic particle inspection, guaranteeing reliable operation. The hard-chromed bore, gas key, and firing pin further enhance durability and corrosion resistance. The aircraft-grade carrier features a precision-ground gas key interface and Sons of Liberty's signature Battle Flag logo. Upgrade your AR-15 with the Sons of Liberty Gun Works 5.56 NATO BCG and experience unmatched performance and reliability.