Sons of Liberty Gun Works OCKS Bolt Carrier Group, for .223 Remington/5.56 NATO, Nickel Teflon Coated, Optimized Carrier Key Screws Upgrade, Nickel Teflon Finish

SOLGW NTC BCG is the direct result of nearly 2 years' worth of research and testing on advanced coatings; optimized for extended service life, high lubricity, and best-in-class corrosion resistance. While their standard phosphate-treated bolt carriers are fantastic and hold lubrication in place, the NTC coating they've selected is extremely slick even without lubrication. The low-friction coating does a phenomenal job of shedding carbon as well, making even suppressed use cleanup a breeze. • Works for 5.56 NATO, .300 Blackout, 6MM MAX, and .350 Legend • HP/MPI Tested C158 Bolt • Phosphate Extractor • Chrome Plated Firing Pin • Chrome Lind Gas Key and Carrier Bore • NTC Coated Carrier, Bolt, Ejector, and Cam Pin • Includes OCKS (Optimized Carrier Key Screws) Upgrade