The Luth-AR MBA-1 Adjustable Buttstock with .308/7.62 Buffer Assembly in FDE (brand part no. MBA-1FK308) pairs Luth-AR’s popular MBA-1 stock body with a matched buffer tube and buffer assembly sized for large-frame, .308/7.62-pattern AR rifles. Luth-AR builds the MBA-1 on a mil-spec tube with multiple length-of-pull positions and a cheek weld height comfortable for both irons and optics, and bundling it with the correct large-frame buffer assembly saves builders from sourcing mismatched parts separately. Finished in FDE, it’s a complete rear-end solution for a .308-pattern build rather than just a stock alone.

Key Specifications

• Sized for .308/7.62-pattern, large-frame AR rifles.
• Includes a matched buffer assembly alongside the stock body.
• Adjusts across multiple length-of-pull positions on a mil-spec tube.
• Finished in FDE to match common large-frame builds.
• Sold as a combined stock-and-buffer assembly rather than separate components.

Frequently Asked Questions

Will this fit a standard AR-15 buffer tube? No, this stock and buffer assembly are sized for large-frame .308/7.62-pattern rifles, not standard AR-15 mil-spec tubes.

Does it come with the buffer and spring included? Yes, this listing bundles the MBA-1 stock body with a matched buffer assembly for a .308-pattern build.

Buy the Luth-AR MBA-1 Adjustable Buttstock with .308/7.62 Buffer Assembly

Finish out your large-frame build with this Luth-AR stock and buffer set from our rifle stocks lineup. Order it from our Lubbock, Texas gun shop for fast, direct shipping to your door.