Sons of Liberty Gun Works OCKS Enhanced 5.56 M16 / AR-15 Bolt Carrier Group - Phosphate

The Sons of Liberty Gun Works OCKS Enhanced 5.56 bolt carrier group is designed for rugged use, making it a great choice for those looking to build a high-performance AR-15 that surpasses Mil-spec standards. Every component in this BCG is heat treated to ensure maximum durability and reliability. The carrier is crafted from AISI 8620 steel with a full-auto profile and protected by a tough manganese phosphate finish. The bolt, made from Carpenter No. 158 alloy, undergoes rigorous testing, including magnetic particle inspection and high-pressure testing, to ensure long-lasting performance.

Features:

• Manganese phosphate finish for corrosion resistance
• HPT and MPI
• Hard chromed bore and gas key
• Carpenter Technology 158 alloy bolt (shot peened)
• 4340 Tool steel extractor (shot peened)
• S7 Tool steel ejector (shot peened)
• Full auto profile 8620 alloy carrier
• 4130 Chromoly gas key with Optimized Carrier Key Screws
• 4340 Chromoly cam pin
• 8640 steel alloy firing pin with chrome plating

The gas key is constructed from 4130 chromoly steel and has Optimized Carrier Key Screws (OCKS). These modified key screws hold the staking on the gas key deeper to help prevent loosening over time. The cam pin includes a solid film lubricant to reduce wear, while the hard chrome-plated firing pin enhances durability and reduces breakage risks. Shot peening strengthens critical parts, and the gas key interface is precisely ground for a secure fit. Perfect for upgrading or building an AR-15, this BCG is engineered for smooth operation and reliable performance over the long haul.