Product Description
The Luth-AR Modular Buttstock Assembly (MBA) for AR style carbines is designed to replace the standard buttstock on your AR. The MBA-4 with Cheek Rise is designed to work with a 6-position Mil-Spec or Commercial buffer tube. The MBA-4 with Cheek Rise is a direct replacement a standard adjustable carbine buttstock with an adjustable Cheek Rise in a low-cost, lightweight, strong and high-quality design.
The MBA-4 requires a Carbine buffer tube, either Mil-Spec or Commercial. Please review the information provided in the Requirements tab. This stock works with both carbine Commercial and Mil-Spec tubes/assemblies.
The MBA-4 also features an anti-rattle set screw. The modular design of the MBA Buttstock allows you to configure your buttstock to your specific and personal needs. Built-in rail attachment for attaching a monopod. The MBA features multiple attachment points for a sling, including molded pockets that will accept Grovtec QD cups, sold separately. Available in Black or Flat Dark Earth or Freedom Flag Cheek Rest (Black only).
MBA-4 with Cheek Piece is our new revolutionary designed stock! This stock is to be paired with Carbine AR rifles allowing shooters to have full adjustability. Not only is it the lightest and most affordable fully adjustable carbine buttstock on the market, it includes several stand-out features.
The MBA-4 requires a Carbine buffer tube, either Mil-Spec or Commercial. This stock works with both carbine Commercial and Mil-Spec tubes/assemblies.
The MBA-4 with Cheek Piece is designed for shooters who do not need the additional Length-of-Pull and 3-axis butt plate adjustability of the MBA-3, but desire the adjustable cheek rise.
Proudly made in the U.S.A
- Fits all .223 and .308 AR style rifles
- Strong and lightweight
- It adds up to 1-inch of height on the cheek rest
- Easy to Replace and quick to install
- Features Picatinny Rail
- Adjusts to 14.75″ Length-Of-Pull
- Revolutionary Anti-Rattle Set Screw
- Adapts To Existing Commercial and Mil-Spec Buffer Tubes
- Uses 4 out of the 6 positions on a mil-spec or commercial tube
- If you require a butt stock that will utilize the first 2 holes of the buffer tube to fully collapse order an MBA-4 without the cheek rest, order an MBA-4 and a 3-axis buttplate or order an MBA-5 buttstock.
- Ergonomic
- Ambidextrous
- Super Strong Glass Filled Nylon
- Easy to add buttplate (adjustable Luth-AR accessory)
*This product does not include Sling Swivels or Buffer Tube Assembly, you can purchase those separately on our site.
MBA-4 and cheek piece is our stripped down version of the MBA-3 with cheek rise support.
- Fits all .223 and most .308 AR style rifles
- Available in Black or Flat Dark Earth
- Strong and lightweight, 10 ounces
- Easy to Replace and quick to install
- It adds up to 1-inch of height on the cheek rest
- Adapts To Existing Commercial and Mil-Spec Buffer Tubes
- Certain after Market Commercial Buffer Tubes that exceed 1.1172″ diameter may not fit
- Super Strong Glass Filled Nylon
- Ergonomic
- Easy to add buttplate (adjustable Luth-AR accessory)
-
- If you are upgrading the MBA-4 stock with a butt plate assembly you will need to also purchase the MBA-4 upgrade package
- Caution: the MBA-3 and MBA-4 Carbine buttstocks are not designed to be used with Large Bore Calibers such as .338 Lapua or .50 BMG applications. See our MBA-1 and MBA-2 Rifle buttstocks as alternatives.
Features:
- Picatinny Rail
- Revolutionary Anti-Rattle Set Screw*
Compatible Buffer Assemblies:
- .223 Mil-Spec Carbine Buffer Assembly
- .223 Commercial Carbine Buffer Assembly
- .308 Mil-Spec Carbine Buffer Assembly
- .308 Commercial Carbine Buffer Assembly
Additional Information:
- When used with the smaller diameter Mil-Spec tube you can adjust the set screw located on the left hand side using the included 3/32” Allen wrench. Turn clockwise to slowly tighten the set screw until it contacts the buffer tube. The Anti-rattle set screw is NOT designed to lock the position of the stock. Over tightening may damage the butt stock.
-
When sliding the buttstock onto a 6-position buffer tube, the lock pin has a notch in the head of the lock pin that must line up with a tab on the stock body. Once the slot and tab are lined up, the pin can be fully retracted allowing the buttstock to slide onto the tube. The MBA-3 should slide easily without resistance. If there is any resistance, the lock pin is not fully retracted.
The MBA-4 with Cheek Piece does not include the following accessories, they can be purchased on our website separately in the Accessories section:
- Sling Swivels (Side or Rear) Sold Separately, see below. Also see Tech-Tip Videos
- Carbine Buffer tube
- Carbine Buffer Body
- Carbine Spring
- Latch Plate
- Lock Ring
