The LUTH-AR MBA-1 Modular Stock in black gives precision shooters a comfortable, fully adjustable buttstock for their AR platform. Designed to replace standard fixed A1 or A2 rifle buttstocks, it fits any AR-style rifle running a rifle-length A2 buffer tube and lets you fine-tune the fit without tools.
This classic black modular stock is a clean upgrade for any fixed-stock rifle. It adds adjustable cheek height and length of pull so the rifle fits you, not the other way around.
What the LUTH-AR MBA-1 Modular Stock Is and Who It Is For
This is a modular buttstock assembly from LUTH-AR in a versatile black finish, built for shooters upgrading from A1 or A2 fixed stocks. It installs on any AR rifle with a rifle-length A2 buffer tube.
It fits precision builds, competition rifles, and range guns where a tunable stock improves consistency. The fully ambidextrous layout serves both left- and right-handed shooters.
The black finish is the do-anything option that blends into virtually any rifle build.
Key Features
The stock combines adjustability with rugged, lightweight construction.
- Direct replacement for fixed A1 or A2 rifle buttstocks
- Fits AR rifles with a rifle-length A2 buffer tube
- Tool-less cheek height and length of pull adjustment
- Glass-filled nylon for strength without added bulk
- Fully ambidextrous with a repositionable cheek riser
- Multiple sling attachment points for versatile carry
Specifications and Build
The LUTH-AR MBA-1 Modular Stock is molded from high-strength, glass-filled nylon that delivers rigidity while keeping weight in check. The material holds up to competition and range abuse without feeling heavy on the shoulder.
Tool-less adjustment covers both cheek rest height and length of pull, letting you tailor the stock to your body and shooting position. The cheek riser ships set for right-hand use but repositions quickly for lefties.
Multiple sling mounting points give you flexible options for carry and support.
Practical Use, Care, and Compatibility
Installation swaps out your fixed rifle stock on a rifle-length A2 buffer tube, and the adjustments let you set eye alignment and shoulder fit right away. Dial in the cheek height and length of pull for repeatable positioning.
Maintenance is easy, needing only a wipe during cleaning and a check that the adjustments stay put. The glass-filled nylon resists everyday wear.
See more precision stocks in our parts and upgrades collection. The LUTH-AR MBA-1 Modular Stock in black pairs with any grip and handguard for a build that fits you perfectly.
Adjustability Meets Everyday Versatility
The appeal of a modular rifle-length stock is that one part can serve many shooters and many roles. Set it once for yourself, or readjust it as your needs change.
The black finish is the universal choice, blending into any build from a retro clone to a modern precision rifle. It never looks out of place.
Underneath the finish, the glass-filled nylon construction is tough enough for competition and range abuse while staying light. The repositionable cheek riser makes it equally at home for left- and right-handed shooters.
For a rifle-length AR that deserves better than a fixed A2 stock, this is a straightforward, high-value upgrade.
Getting the Most From It
Install the stock on a rifle-length A2 buffer tube and adjust cheek height and length of pull for your body and position. The changes take only minutes with no tools.
Maintenance is easy, needing only a wipe during cleaning and a check that the adjustments stay put. The glass-filled nylon shrugs off everyday wear.
This stock ships direct where state and local law allows, arriving ready for your rifle-length build.
Its black finish pairs with any grip and handguard, so it fits right into an existing rifle.
Set your fit once and enjoy consistent, repeatable positioning on every range trip.
For a tunable, do-it-all rifle-length stock, the LUTH-AR MBA-1 Modular Stock in black is hard to beat. Ships direct to your door, no FFL required.





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