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Luth-Ar
The Luth-AR MBA-5 adjustable rifle stock is a purpose-built carbine buttstock that combines lightweight design with practical ergonomics for AR platform shooters who want adjustability without complexity. Built from high-strength glass-filled nylon, the MBA-5 delivers a compact, reliable platform that fits either Mil-Spec or Commercial carbine buffer tubes—so whether you're running a .223 Rem/5.56mm or .308 Win/7.62mm build, this stock adapts to your setup.
What sets the MBA-5 apart is its no-nonsense feature set. The paddle-style adjustment lever lets you change length-of-pull on the fly, with a collapsed length of 11.5 inches and extended length of 14.5 inches—quick enough for transitions between positions or shooters. The flared cheek rest is designed for a consistent cheek weld, and the integrated Picatinny rail gives you a mounting point for a mono-pod or other accessories. The rubber buttpad handles recoil comfortably, and at just 8.95 ounces, it won't bog down your rifle.
Installation and maintenance are straightforward. The included Anti-Rattle clamp (fastened with a 3/32 hex key wrench) keeps things quiet in the field—no mysterious clicks or movement. The stock also features Quick Release Cup pockets on both sides, making it Grovtec Quick Detach sling cup ready. For builders pairing the MBA-5 with Luth-AR handguards and grips, it's the natural fit; for anyone else, it's a solid, affordable upgrade that doesn't require specialized knowledge to install.
| Manufacturer | Luth-AR LLC |
| Model | MBA-5 |
| Color | Black |
| Material | High-strength glass-filled nylon |
| Weight | 8.95 oz |
| Length Collapsed | 11.5 inches |
| Length Extended | 14.5 inches |
| Buffer Tube Compatibility | Mil-Spec and Commercial carbine buffer tubes |
| Caliber Compatibility | .223 Rem/5.56mm and .308 Win/7.62mm platforms |
| Anti-Rattle Clamp Fastener | 3/32 inch hex key |
The MBA-5 is designed to fit either Mil-Spec or Commercial carbine buffer tubes, so it works on the vast majority of AR carbine builds.
The MBA-5 is engineered as a carbine buttstock and is compatible with .223 Rem/5.56mm and .308 Win/7.62mm platforms. While it works on .308 builds, your specific application and barrel length will determine overall fit. Confirm your buffer tube type before ordering.
Yes. The MBA-5 comes with the industry-exclusive Anti-Rattle clamp, which is secured with a 3/32 inch hex key wrench.
The MBA-5 adjusts from 11.5 inches collapsed to 14.5 inches extended, giving you 3 inches of total adjustment range via the paddle-style lever.
Luth-Ar
The Luth-AR MBA-5 adjustable rifle stock is a purpose-built carbine buttstock that combines lightweight design with practical ergonomics for AR platform shooters who want adjustability without complexity. Built from high-strength glass-filled nylon, the MBA-5 delivers a compact, reliable platform that fits either Mil-Spec or Commercial carbine buffer tubes—so whether you're running a .223 Rem/5.56mm or .308 Win/7.62mm build, this stock adapts to your setup.
What sets the MBA-5 apart is its no-nonsense feature set. The paddle-style adjustment lever lets you change length-of-pull on the fly, with a collapsed length of 11.5 inches and extended length of 14.5 inches—quick enough for transitions between positions or shooters. The flared cheek rest is designed for a consistent cheek weld, and the integrated Picatinny rail gives you a mounting point for a mono-pod or other accessories. The rubber buttpad handles recoil comfortably, and at just 8.95 ounces, it won't bog down your rifle.
Installation and maintenance are straightforward. The included Anti-Rattle clamp (fastened with a 3/32 hex key wrench) keeps things quiet in the field—no mysterious clicks or movement. The stock also features Quick Release Cup pockets on both sides, making it Grovtec Quick Detach sling cup ready. For builders pairing the MBA-5 with Luth-AR handguards and grips, it's the natural fit; for anyone else, it's a solid, affordable upgrade that doesn't require specialized knowledge to install.
| Manufacturer | Luth-AR LLC |
| Model | MBA-5 |
| Color | Black |
| Material | High-strength glass-filled nylon |
| Weight | 8.95 oz |
| Length Collapsed | 11.5 inches |
| Length Extended | 14.5 inches |
| Buffer Tube Compatibility | Mil-Spec and Commercial carbine buffer tubes |
| Caliber Compatibility | .223 Rem/5.56mm and .308 Win/7.62mm platforms |
| Anti-Rattle Clamp Fastener | 3/32 inch hex key |
The MBA-5 is designed to fit either Mil-Spec or Commercial carbine buffer tubes, so it works on the vast majority of AR carbine builds.
The MBA-5 is engineered as a carbine buttstock and is compatible with .223 Rem/5.56mm and .308 Win/7.62mm platforms. While it works on .308 builds, your specific application and barrel length will determine overall fit. Confirm your buffer tube type before ordering.
Yes. The MBA-5 comes with the industry-exclusive Anti-Rattle clamp, which is secured with a 3/32 inch hex key wrench.
The MBA-5 adjusts from 11.5 inches collapsed to 14.5 inches extended, giving you 3 inches of total adjustment range via the paddle-style lever.
