Luth-AR MBA-1K MBA-1 AR-15 Ambidextrous Buttstock Kit w/ .223/5.56 Buffer Assembly - Black

The Luth-AR MBA-1 is a fixed AR-15 rifle buttstock built around a standard A2-style buffer tube and finished in matte Black. The MBA-1 brings Luth-AR's modular adjustment concept to a classic fixed-stock format, delivering a fully ambidextrous shooting platform for AR-pattern rifles chambered in .223/5.56.

This MBA-1K version ships as a complete buttstock kit, bundling the stock with a matched .223/5.56 buffer assembly: an A2 rifle extension tube, a standard carbine buffer, and an AR-15 buffer spring. Together, the kit drops directly onto a mil-spec AR-15 lower to replace the factory stock and tube in one go.

The MBA-1 is engineered for fit. A fully ambidextrous cheek weld accommodates both right- and left-handed shooters, while the integrated adjustable cheek piece adds up to an extra 1" of height for proper eye alignment with optics. Length of pull slides from 10.50" to 11.50", letting the shooter dial in the right reach for body armor, layered clothing, or different shooters sharing the same rifle. The whole assembly tips the scales at just 1.26 lbs, keeping the rear of the rifle light and well-balanced.

Installation is straightforward: the included A2 extension threads onto any standard AR-15 receiver extension threads, and the buttstock clamps securely to the A2 tube. Designed and manufactured in the USA, the MBA-1K is a clean upgrade path for shooters who want A2-style durability with modern ambidextrous cheek-ride-height and length-of-pull adjustability.