Sons of Liberty Gun Works OCKS BCG 5.56 Phosphate – AR-15 Bolt Carrier Group

The Sons of Liberty Gun Works OCKS BCG is a mil-spec bolt carrier group designed for AR-15 rifles chambered in 5.56 NATO/.223 Remington. This is a complete replacement BCG built to handle duty use, with OCKS (Optimized Carrier Key Screws) that are properly staked and secured to prevent gas key failure during high round counts or hard use.

The carrier and bolt are machined from mil-spec 8620 steel with a traditional phosphate finish that provides reliable corrosion resistance and reduces friction. This is a drop-in replacement for any mil-spec AR-15 lower receiver—no fitting or gunsmithing required. Gas rings, extractor, ejector, and cam pin are included as a complete assembly ready to install.

• Part Type: Complete Bolt Carrier Group
• Compatible Firearms: AR-15, 5.56 NATO/.223 Remington
• Material: 8620 Steel (Carrier and Bolt)
• Finish: Phosphate
• Installation: Drop-In
• Includes: Bolt, Carrier, Gas Rings, Extractor, Ejector, Cam Pin, Firing Pin