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Luth-AR MBA-4 Stock Assembly is a lightweight buttstock designed for AR-15 and AR-10 carbines. The buttstock is made of glass-filled nylon, weighs 9.6 oz, and measures 7.5 inches in length. It features an integrated Picatinny rail on the butt, an anti-rattle set screw, and is designed to adapt to existing commercial and Mil-Spec buffer tubes. The MBA-4 is not interchangeable with A2 standard buffer tubes. Package contents: Luth-AR MBA-4 Stock Assembly. Compatibility: AR-15 and AR-10.
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Sign In to Set AlertThis is a bundled product that includes multiple components. The exact contents may vary - check the product description for more details.
• Complete assembly ready to use
• Multiple components included
• Value package pricing
Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral overview of AR-15 buffer systems, covering carbine vs. rifle receiver extensions, buffer weights, springs, and how these parts affect cycling and recoil.
5 min read