The KAK Industry K-SPEC Enhanced Bolt Carrier Group (KAK Industry part no. MO-425-3312-001) is a black bolt carrier group engineered for peak performance in both 5.56 and .300 Blackout AR-15 rifles. KAK Industry designed the K-SPEC to deliver unmatched reliability whether the rifle is running suppressed, which pushes more gas and fouling back into the action, or shooting in the cleanest of conditions. That dual-caliber engineering makes it a strong choice for builders who swap between 5.56 and .300 Blackout uppers on the same lower. It is a genuine performance upgrade for AR-15 owners who want a bolt carrier group built specifically to handle the demands of suppressed shooting.

Key Specifications

• Engineered for 5.56 and .300 Blackout rifles.
• Finished in black.
• Classified as a bolt carrier group, model K-SPEC.
• Built for reliable cycling when running suppressed.

Frequently Asked Questions

What calibers does this BCG run? Both 5.56 and .300 Blackout.

Is this carrier built for suppressed shooting? Yes, it is engineered for reliable cycling whether running suppressed or clean.

Buy the KAK Industry K-SPEC Enhanced Bolt Carrier Group

Run 5.56 or .300 Blackout, suppressed or clean, with a bolt carrier group built for it. See more from KAK Industry or shop our full AR bolt carrier groups selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.