Luth AR MBA 5 Carbine Stock Fits AR 15 AR 10 Black MBA 5 LUTHMBA 5 UPC 812058030775
Product Description
The Luth-AR® MBA-5™ Modular Carbine Buttstock in Black (SKU: MBA-5 / UPC: 812058030775) delivers precision-inspired ergonomics and rock-solid lockup for tactical carbines, SPRs, and large-frame AR-10 builds. Weighing just 8.95 ounces, the MBA-5 upgrades standard telescoping M4 stocks with a wide, flared cheek rest, an integrated lower Picatinny monopod rail, and a versatile 11.5-inch to 14.5-inch length-of-pull adjustment range.
Precision injection-molded in the USA from high-strength, glass-reinforced nylon polymer, the black MBA-5 resists heavy impacts, abrasion, and extreme weather conditions. Its dual-dimension internal bore slips directly onto both Mil-Spec (1.148-inch OD) and Commercial-Spec (1.168-inch OD) 6-position carbine buffer tubes. Once positioned on a Mil-Spec tube, Luth-AR's proprietary Anti-Rattle clamp system allows the shooter to tension out lateral wobble for the dead-steady feel of a fixed precision stock.
Whether transitioning rapidly between CQB positions or settling onto a rear bag for long-range shots, the MBA-5's paddle-style adjustment lever provides fast length-of-pull indexing while the non-slip rubber buttpad cushions heavy .308 and 5.56 recoil impulses. Complete with an integrated 6 o'clock MIL-STD-1913 Picatinny rail for monopods, traditional 1.25-inch sling loops, and molded GrovTec QD sling cup pockets, the Luth-AR MBA-5 is a high-value foundation for any modern sporting rifle.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Fits all AR-15, M4, and AR-10 / LR-308 rifles utilizing a 6-position Mil-Spec (1.148" OD) or Commercial (1.168" OD) carbine buffer tube. CRITICAL ARMORER NOTE: Will NOT fit fixed A1/A2 rifle buffer tubes or smooth pistol buffer tubes. The MBA-5 is engineered with a fixed flared cheek rest and does NOT accept the vertical MBA-4 cheek piece attachment. To attach push-button QD sling swivels, install Luth-AR / GrovTec threaded QD cups (SKU: GT-CUP, sold separately).
- Ensure the host firearm is completely clear, magazine removed, and chamber visually and physically verified empty before beginning buttstock installation.
- Verify that the anti-rattle set screw on the Luth-AR MBA-5 body is backed out clear of the internal buffer tube channel.
- Grip both arms of the split paddle adjustment lever evenly and pull downward fully to retract the internal locking pin past the buffer tube lip, then slide the MBA-5 forward onto your carbine receiver extension.
- Release the paddle lever and test lockup across all 6 buffer tube positions along the 11.5" to 14.5" length-of-pull range.
- At your primary length-of-pull notch on a Mil-Spec tube, tighten the anti-rattle tension screw until lateral play is eliminated while preserving smooth lever actuation when needed.
Key Features
- Fits Mil-Spec & Commercial Buffer Tubes: Universal carbine bore installs directly onto both 1.148" Mil-Spec and 1.168" Commercial 6-position receiver extensions.
- Anti-Rattle Set-Screw Clamp: Eliminates annoying receiver-extension wobble on Mil-Spec tubes for enhanced accuracy and shooter confidence.
- Wide Flared Cheek Rest & Rubber Buttpad: Provides a consistent, comfortable cheek weld behind magnified optics alongside a non-slip rubber shoulder pad.
- Integrated Bottom Picatinny Rail: Built-in 6 o'clock MIL-STD-1913 rail section allows direct mounting of rear monopods or precision bag riders.
- Featherweight 8.95 oz Glass-Filled Nylon: Durable American-made polymer chassis includes a paddle adjustment lever, sling slots, and GrovTec™ QD cup pockets.
Product Specifications
- Brand: Luth-AR®
- Model/Series: MBA-5™ Modular Buttstock Assembly
- MPN / SKU: MBA-5 / MBA-5B / MBA5
- Distributor SKU: LUTHMBA-5
- UPC: 812058030775
- Platform Compatibility: AR-15 / AR-10 (Mil-Spec & Commercial Carbine Buffer Tubes)
- Length of Pull (LOP): 11.5 in (Collapsed) – 14.5 in (Extended)
- Material: High-Strength Glass-Reinforced Nylon w/ Rubber Buttpad
- Accessory Interface: Integrated Bottom Picatinny Rail & GrovTec™ QD Cup Ready
- Finish / Color: Matte Black
- Country of Origin: USA
