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+ 12% Off Select AR15 Parts Use Code: ARBUILD12

AR-15 STOCK ASSEMBLY COLLAPSIBLE CARBINE LENGTH Reviews & Ratings

The Luth-AR Modular Buttstock Assembly (MBA) for AR style carbines is designed to replace the standard buttstock on your AR. The MBA-3 is designed to work with a 6-position Mil-Spec or Commercial buffer tube. The MBA-3 features a 3-Axis Buttplate with Length-of-Pull adjustment as well as height and lateral adjustments, and an adjustable cheek rise in a low-cost, lightweight, strong and high-quality design.

The MBA-3 requires a Carbine buffer tube, either Mil-Spec or Commercial. This stock works with both carbine Commercial and Mil-Spec tubes/assemblies.

The MBA-3 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. Includes a 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.

Ergonomic Design
Adapts To Existing Commercial and Mil-Spec Buffer Tubes
Certain after Market Commercial Buffer Tubes that exceed 1.172″ diameter, may not fit
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 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.
The MBA-3 Carbine buttstock is NOT interchangeable with A2 standard buffer tube. You will need to purchase an MBA-1 or MBA-2 Rifle buttstock to fit A2 tubes.

The Luth-AR adjustable buttstock is constructed of durable lightweight polymer and available in Black or FDE.

See all of our AR15s and AR15 parts here.

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Reviews Summary

Overall, the AR-15 Collapsible Stock Assembly is well-received for its adjustability and comfortable fit. Users appreciate its modular design and how it accommodates different users, though some have noted issues with fit on certain buffer tubes and the quality of the butt pad. Customer service has garnered positive feedback, adding to the product's appeal.

What Reviewers Are Saying

Adjustability

80%

Many reviewers praise the stock for its adjustable features, including length of pull and cheek height, making it suitable for various users and shooting styles. This flexibility enhances comfort and usability for multiple shooters, especially with different body types and preferences.

Fitment Issues

50%

Several users reported problems with the stock fitting securely on both MilSpec and Commercial buffer tubes. While adjustable features are strong, the play or wobble on certain setups can be a concern, leading customers to seek solutions like additional tape or modifications.

Comfort and Padding

30%

Reviewers expressed mixed feelings about the butt pad's comfort, with some finding it hard and uncomfortable. A few suggested upgrading to aftermarket pads for better shooting experience, indicating that the basic pad may not meet all users' expectations.

Customer Service

40%

LUTH-AR's customer service received commendations for being helpful and responsive, reflecting positively on the company’s commitment to customer satisfaction. Users feel reassured knowing assistance is available if they encounter issues.

Value for Money

70%

The stock is frequently mentioned as a great value for its price, with many users satisfied with its functionality and features compared to more expensive models. This sentiment enhances the overall appeal of the product.

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It works for all sized shooters

The fully adjustable buttstock works very well for my grandson. A full length stock is just too long so this works great. He can also adjust the comb height. IMO this is the best stock because of its adjustability. Adjustable length of pull and a cheek riser is perfect for him. And in 30 seconds I can adjust it for me…

by DALE J. on November 15, 2023

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Lots of adjustability

Have one of these on a CZ 22 and a Creedmoor rifle for the grandkids to shoot as it adjusts down to about 11.5 in LOP

adjustable stock

i have put several of these on my rifles and friends rifles. the cheek adjustment helps with scopes, holds when tightened. since the length can be adjusted using the carbine 6 holes the length is only really needed for those with long arms. not sure how many rounds we have fired with the ones installed, but zero problems so far. if anything draw back at all, it would be the knob to adjust the length is small and hard to grab with gloves.

Very nice stock for carbine buffer tube

Very nice stock for the money. I've had 3 of these( the mba3) and they are made to fit on carbine buffer tube, commercial or mil spec. There's a small allen screw that will tighten up against the tube, to take up the slack. So it sits very nice and snug. I've used the stock for about a year now, never had an issue with quality. Be sure to check about the butt pad, factory one is palstic and tough. I replaced it with a nice thick recoil pad from limbsaver. Mounts almost perfectly flush, and works great. For the money, this is a great stock the is compact, yet also adjustable. Hope that info helps anyone interested in this stock.