KAK Industry A5 Style Buffer Tube 9-Position AR-15 - Black Hard Coat Anodized

The KAK Industry A5 Style Buffer Tube is a 9-position receiver extension designed for the AR-15 platform. Built from high-quality 7075 aluminum and finished in black military-spec hard coat anodized, this extended carbine-length tube provides the additional travel required to run A5 buffer systems and rifle-length buffer springs.

Engineered to mil-spec dimensions, the A5 tube extends the classic receiver extension geometry to 9 positions for greater stock adjustment range and compatibility with longer A5 buffer setups. At 4 oz, it adds minimal weight to your build while delivering the strength and finish quality expected from KAK Industry.

Important compatibility note: this tube is designed for use with A5-style buffers and rifle-length AR-15 buffer springs only. Do not pair with standard carbine buffers or carbine-length springs, as the longer stroke will cause reliability issues.

Whether you're building a new A5-length AR-15, retrofitting an existing carbine, or upgrading for improved reliability with heavier buffers, the KAK Industry A5 Style Buffer Tube offers a solid foundation for your lower receiver assembly.