Sons of Liberty Gun Works Nickel Teflon OCKS BCG 5.56 – AR-15/M16

The Sons of Liberty Gun Works Nickel Teflon OCKS (Optimized Carrier Key Staking) Bolt Carrier Group is a precision-machined replacement BCG for AR-15 and M16 platforms chambered in 5.56 NATO/.223 Rem. Designed for duty use and high-round-count shooting, this BCG features advanced staking methods for the carrier key and a nickel-teflon coating that reduces friction and resists fouling better than standard phosphate finishes. Ideal for shooters who demand reliability under sustained fire or adverse conditions.

The carrier is machined from 8620 steel with nickel-teflon coating, while the bolt is made from Carpenter 158 steel and properly tested for material integrity. The OCKS carrier key staking process uses multiple precision stakes to prevent gas key movement—a common failure point in lower-quality BCGs. Installation is drop-in for any mil-spec AR-15 upper receiver; no fitting or gunsmithing required. Comes fully assembled and ready to install.

• Part Type: Bolt Carrier Group
• Compatible Firearms: AR-15, M16 (5.56 NATO/.223 Rem)
• Carrier Material: 8620 Steel
• Bolt Material: Carpenter 158 Steel
• Finish: Nickel Teflon
• Gas Key Staking: OCKS (Optimized Carrier Key Staking)
• Installation: Drop-In
• Includes: Fully assembled BCG (bolt, carrier, cam pin, firing pin, retaining pin)