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The Luth-AR MBA-4 Stock Assembly is a complete buttstock kit for AR platform rifles that uses carbine buffer systems on AR-15 and AR-10 models. The MBA-4 stock adapts to both commercial and mil-spec buffer tubes and includes a Picatinny rail on the butt for accessory mounting. It features an anti-rattle set screw and can be extended with optional cheek piece and butt plate assemblies. Weight is 9.6 oz and length is 7.5 in. Package contents include the MBA-4 Stock Assembly. Compatible with AR-15 and AR-10; not interchangeable with A2 standard buffer tubes.
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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