KAK Industry Bolt Carrier Group, For AR-15, 556/300 Blackout, 9310 Steel Bolt, Chrome Finish, Silver 425-0505-001

CHROME-LINED PHOSPHATE FINISHED BCG: KAK Industry’s rock-solid dependable 5.56 NATO bolt carrier group, chrome-lined and phosphate finished. The workhorse of our BCG portfolio, this product is made to provide years of unquestionable reliability without the sticker shock.

FULL CHROME BCG: Full Chrome. Hard Chrome. Machine Gun Chrome. Regardless of what you call it, this BCG is as tough as it is good looking. KAK Industry’s 5.56 NATO Full Chrome BCG is made for unflinching reliability no matter how rough the use.

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 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.
• KAK Carrier Key Screws - T25 drive, Grade 8, Properly Heat Treated.