KAK Industry Bolt Carrier Group, 224 Valkyrie/6.8 SPC, For AR-15, 9310 Steel Construction, Chrome Lined, Phosphate Finish, Black 425-0512-019

KAK Industry’s rock-solid dependable .224 Valkyrie / 6.8 SPC bolt carrier group, chrome-lined and phosphate finished. The workhorse of KAK Industry’s BCG portfolio, this product is made to provide years of unquestionable reliability without the sticker shock.

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.
• 4340 phosphate coated cam pin.
• 8740 chrome plated firing pin, precision ground and heat treated.
• S7 Tool Steel ejector and extractor retaining pin.
• 4130 Steel gas key, phosphate-coated and chrome lined, precision staked.
• KAK Carrier Key Screws - T25 drive, Grade 8, Properly Heat Treated.