The KAK Industry K-SPEC Enhanced Bolt Carrier Group (brand part no. MO-425-3305-007) is a 5.56 BCG engineered for reliability whether your AR runs suppressed or unsuppressed, in any conditions. KAK Industry designed the K-SPEC as a true plug-and-play carrier: drop it into your rifle and it accommodates whatever configuration the mission requires, with no additional tuning of the gas or recoil system needed to run a can reliably. Like all KAK bolt carrier groups, it is machined to the M16 full-auto profile. Among rifle bolts and carriers, the K-SPEC favors suppressor shooters tired of tuning buffers and gas blocks.

Key Specifications

• Built for 5.56mm AR-15 pattern rifles.
• Machined to the M16 full-auto profile for durability and reliable cycling mass.
• Engineered to run suppressed with no gas or recoil tuning required.
• A true plug-and-play drop-in for existing builds.
• Designed for reliability in adverse conditions, suppressed or unsuppressed.

Frequently Asked Questions

Do I need an adjustable gas block to run this BCG suppressed? No, the K-SPEC is engineered to cycle reliably under a suppressor without gas or recoil system changes.

Is a full-auto profile carrier legal in a semi-auto rifle? Yes, the M16-profile carrier is a standard, unregulated AR-15 part that does not change the rifle’s function.

Buy the KAK K-SPEC Enhanced Bolt Carrier Group

Suppressor-ready reliability without the tuning headaches is exactly what the K-SPEC delivers. Order it from our Lubbock, Texas gun shop for fast shipping.