Luth-AR MBA-3 Modular Carbine Stock Kit

Luth-AR MBA-3 Modular Carbine Stock Kit

The MBA-3 represents a thoughtful approach to AR-15 ergonomics. This complete stock assembly addresses a fundamental problem: factory stocks often don't fit everyone the same way. Luth-AR's solution is a fully adjustable system that lets you dial in your rifle to your body.

What You Get

This kit includes everything required for installation:

• MBA-3 modular stock with 3-axis adjustable butt plate
• Adjustable cheek rest for proper sight picture alignment
• Adjustable length of pull to match your arm length
• Mil-spec diameter carbine buffer tube
• Carbine recoil buffer and spring
• Receiver end plate and castle nut
• Anti-rattle screw for secure fitment

Design and Functionality

The MBA-3 is constructed from glass-filled nylon—a material that balances durability with weight savings. The stock features multiple sling mounting points, giving you flexibility in how you carry and deploy your rifle. A bottom Picatinny rail allows mounting of a rear monopod for supported shooting positions.

Compatibility and Installation

This kit is designed for AR-15 platforms chambered in .223 Remington. The included mil-spec buffer tube fits standard mil-spec diameter receivers. Installation is straightforward, and the anti-rattle screw ensures a solid, wobble-free fit. No gunsmithing required.

Why It Matters

Proper stock fit affects accuracy, comfort, and control. By allowing adjustment of cheek height, length of pull, and butt plate angle, the MBA-3 lets you achieve a consistent, repeatable shooting position—essential for both precision work and tactical applications.