Description
*CONTACT US FOR A SPECIAL COUPON CODE!*
Luth-AR’s MBA-3 Modular Carbine Stock is designed to be compatible with both Commercial and Mil-Spec Diameter Carbine Buffer Tubes for the AR-15 and AR-10 platforms. The MBA-3 is fully adjustable, and comes equipped with a 3-axis adjustable butt plate, adjustable cheek rest and adjustable length of pull. Additional features include multiple sling mounting points and a bottom Picatinny accessory rail for use in mounting a rear monopod. The MBA-3 will fit all .223 and most .308 AR carbine style rifles. It is constructed of strong glass filled nylon, is easy to replace and quick to install. An included anti-rattle screw ensures a secure fit to either diameter carbine buffer tube. This Complete Assembly Kit comes with everything needed to install the MBA-3 Stock to your AR-15 lower receiver, including a Mil-Spec diameter buffer tube, carbine recoil buffer, carbine recoil buffer spring, receiver end plate and castle nut.
Package Includes:
- (1) MBA-3 Modular Buttstock Assembly
- (1) Carbine 6-Position Mil-Spec Buffer Tube
- (1) .223/5.56 Carbine Buffer Spring
- (1) .223/5.56 buffer body – 3.2 oz
- (1) Latch Plate
- (1) Lock Ring
The MBA-3 includes the following features:
- Buttstock assembly to mount to a Carbine AR
- Fits all .223/5.56 AR style rifles
- Easy to Replace and quick to install
- It adds up to 1-inch of height on the cheek rest, and an additional 1-1/16 inch length of pull
- Made of super strong glass-filled nylon, the Luth-AR MBA-3 weighs roughly half that of comparable stocks coming in at just 18 ounces.
- Includes a Picatinny Rail on the bottom rear of the Stock Body to attach your choice of many accessories.
- Designed a flat bottom index set screw (10-24) to eliminate that constant rattle of carbine collapsible buttstock. This also allows you to secure the stock in your favorite position.
- 3-axis adjustable butt plate assembly (keep in mind this butt plate assembly is interchangeable with the original MBA-1 Buttstock) will have the following movement:
- Horizontal for linear adjustment (i.e. length of pull)
- Vertical for a perfect butt plate fit into the curvature of the shoulder.
- Lateral adjustment for a ½ inch left or right cast.
- Ergonomic
- The MBA-3 and MBA-4 available in Black or Flat Dark Earth
- 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, you can remove the cheek rest from the MBA-3, or order an MBA-4, order an MBA-4 and a 3-axis buttplate or order an MBA-5 buttstock.
- The vertical struts for the MBA-3 are fixed therefore the cheek piece is not reversible like the MBA-1 however the cheek piece itself is designed with a cheek pad for left-handed use
- 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.
Specifications
- Length of Pull (LOP) – Extended: 15 5/8″
- Length of Pull (LOP) – Collapsed: 11 11/16″
- Overall Length Extended: 8 3/4″
- Overall Length Collapsed: 7 11/16″
- Weight: 18.5 ounces
*Length of Pull Specs depend on Buffer Tube Hole Location/Position and 5 or 6 hole patter.
Compatible Buffer Assemblies:
- .223/5.56 Mil-Spec Carbine Buffer Assembly (Included)
- Material: 6061-T6 Aluminum
- Finish: Hardcoat Anodized Black
- .223/5.56 Commercial Carbine Buffer Assembly (Included)
- .308/7.62 Mil-Spec Carbine Buffer Assembly
- .308/7.62 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.
