KAK Industry K-SPEC Enhanced, Bolt Carrier Group, For AR-15, 556/300 Blackout, 9310 Steel Bolt, Hard Chrome Finish, Silver, Dual Ejector, Side Vent 425-0505-003

K-SPEC: Mil-Spec, Enhanced.

KAK Industry’s signature design for unrivaled performance and unparalleled reliability, all K-SPEC Enhanced BCGs retain mil-spec dimensions with added Slotted Angle Carrier Rails (“sand cutters”) and Dual Ejector system.

All KAK Industry BCGs feature a M16 (Full Auto) carrier profile, meticulously machined from 8620 steel, properly heat treated and ground to exact tolerances. Other components include:

Single piece billet-machined 4140 extractor, phosphate coated for Increased reliability and corrosion resistance.

Includes

• 4340 Chrome plated cam pin.
• 8740 chrome plated firing pin, precision ground and heat treated.
• S7 Tool Steel ejector and extractor retaining pin.
• 4130 Machined Billet Steel gas key, Chrome lined and Chrome plated, precision staked and Permatex sealed to the carrier.
• KAK Carrier Key Screws - T25 drive, Grade 8, Properly Heat Treated.