Luth-AR MBA-3 Carbine Buttstock | Up to $14.34 Off 4.5 Star Rating w/ Free Shipping

Luth-AR MBA-3 Stock Assembly, Black, MBA-3

Luth-AR MBA-3 Stock Assembly, Flat Dark Earth, MBA-3F

Luth-AR MBA-3 Stock Assy. with Commerical .223 Kit, Black MBA-3K-C

Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, Black MBA-3K-M

Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, Flat Dark Earth MBA-3FK-M

Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, Black MBA-3K308-C

Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, Flat Dark Earth MBA-3FK308-C

Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Black MBA-3K308-M

Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Flat Dark Earth MBA-3FK308-M

Luth-AR MBA-3 Stock Assembly, Black, MBA-3

Luth-AR MBA-3 Stock Assembly, Flat Dark Earth, MBA-3F

Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Black, MBA-3K308-M

Luth-AR MBA-3 Stock Assembly, Black, MBA-3

Luth-AR MBA-3 Stock Assembly, Flat Dark Earth, MBA-3F

Government Export Restriction

This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

Government Restriction

By adding to cart, I understand and agree to the Domestic Restricted Product Policy and certify that I will comply with applicable federal, state and local laws and regulations.

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Questions & Answers

what is your buffer weight for the 308 version? Expert Answer

The Luth-AR MBA-3 Carbine Buttstock .308 model has a 3.8oz buffer.

by Hunter, Gear Expert, May 27, 2022

See 1 More Answer

Is the color of the FDE actually darker than in the picture displayed? It looks more like dessert sand to me. Expert Answer

The color does appear to be slightly darker on LUTH-AR's website. You can see a photo of the color at https://www.luth-ar.com/wp-content/uploads/2016/05/MBA-3-FDE.jpg.

by Tiffany S., Gear Expert, June 28, 2019

View All Q&A You Have a Question? Ask!

Customer Reviews

Helpful Positive Review

Luth AR MBA-3 by DP, Verified Owner, December 19, 2025

Stock is quality, sturdy with good adjustment ergonomics. Only downside is the cheek riser can get in the way of an AR pattern charging handle. Overall a good stock.

1/1 found this helpful

Helpful Positive Review

Savage 10BA Stealth by ChikinNWafols, Verified Owner, August 2, 2018

I put this in my Savage 10BA Stealth using the stock buffer tube. The fit is very tight and it’s very hard to manipulate the stock adjustment. I’m thinking it would probably be best to get a new buffer tube. The product itself is very sturdy looki...
Read More...

13/14 found this helpful

Helpful Positive Review

it works…… by tj, Verified Owner, August 5, 2025

I’m a fan of the adjustability with the exception of the control for adjusting the length along the buffer. That knob is a bit tucked away and could be better

1/1 found this helpful

Helpful Positive Review

This one is too short, this is one is too long, this one is JUST RIGHT!!!! by GongDinger1121, April 8, 2025

Are you tired of being forced to hold your head in an uncomfortable position when looking down range through your optic? Well you just found the solution! The MBA-3 gives me so much flexibility and comfort and drastically reduces the time it takes to...
Read More...

1/1 found this helpful

Helpful Positive Review

demo luth-ar mba-3 buttstock by Ernest, September 11, 2022

came quickly and was of high quality just like new but I did not have to put it together and was less expensive. put this on my Ar-15 6.5 grendal for 500 yard work. It gave me better hold and less felt recoil.

1/2 found this helpful

Helpful Positive Review

Luth AR mba stock by Richard, Verified Owner, May 8, 2025

This is my 4th Luth AR stock. Optics Planet is a great company. I bought 2 scopes a few weeks ago and received 130 bonus bucks so I used them to buy this stock which came to $12 dollars.

1/1 found this helpful

Read All 91 Reviews

Show In Stock Only

9 Models Available

Gun Model

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Color

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Additional Features

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Luth-AR MBA-3 Stock Assembly, Black, MBA-3

Gun Model:: AR-10, AR-15
Color:: Black
Additional Features:: No

Code: 3FN-BSC-MBA3S-MBA-3

MPN: MBA-3

UPC: 862388000122

List: ~~$159.95~~Save $9.60

$150.35

Luth-AR MBA-3 Stock Assembly, FDE, MBA-3F

Gun Model:: AR-10, AR-15
Color:: Flat Dark Earth
Additional Features:: No

Code: 3FN-BSC-MBA3S-MBA-3F

MPN: MBA-3F

UPC: 859819007003

List: ~~$159.95~~Save $9.60

$150.35

Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, Black, MBA-3K-M

Gun Model:: AR-15
Color:: Black
Additional Features:: with Mil-Spec .223 Kit

Code: 3FN-BSC-MBA3S-MBA-3K-M

MPN: MBA-3K-M

UPC: 859992007418

List: ~~$209.95~~Save $12.60

$197.35

Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, Black, MBA-3K308-C

Gun Model:: AR-10
Color:: Black
Additional Features:: with Commerical .308 Kit

Code: 3FN-BSC-MBA3S-MBA-3K308-C

MPN: MBA-3K308-C

UPC: 859992007388

List: ~~$237.95~~Save $14.28

$223.67

Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Black, MBA-3K308-M

Gun Model:: AR-10
Color:: Black
Additional Features:: with Mil-Spec .308 Kit

Code: 3FN-BSC-MBA3S-MBA-3K308-M

MPN: MBA-3K308-M

UPC: 859992007395

List: ~~$238.95~~Save $14.34

$224.61

Luth-AR MBA-3 Stock Assy. with Commerical .223 Kit, Black, MBA-3K-C

Gun Model:: AR-15
Color:: Black
Additional Features:: with Commerical .223 Kit

Code: 3FN-BSC-MBA3S-MBA-3K-C

MPN: MBA-3K-C

UPC: 859992007401

List: ~~$208.95~~Save $12.54

$196.41

Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, FDE, MBA-3FK-M

Gun Model:: AR-15
Color:: Flat Dark Earth
Additional Features:: with Mil-Spec .223 Kit

Code: 3FN-BSC-MBA3S-MBA-3FK-M

MPN: MBA-3FK-M

UPC: 859992007456

List: ~~$209.95~~Save $12.60

$197.35

Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, FDE, MBA-3FK308-C

Gun Model:: AR-10
Color:: Flat Dark Earth
Additional Features:: with Commerical .308 Kit

Code: 3FN-BSC-MBA3S-MBA-3FK308-C

MPN: MBA-3FK308-C

UPC: 859992007425

List: ~~$237.95~~Save $14.28

$223.67

Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, FDE, MBA-3FK308-M

Gun Model:: AR-10
Color:: Flat Dark Earth
Additional Features:: with Mil-Spec .308 Kit

Code: 3FN-BSC-MBA3S-MBA-3FK308-M

MPN: MBA-3FK308-M

UPC: 859992007432

List: ~~$238.95~~Save $14.34

$224.61

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Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

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Product Info for Luth-AR MBA-3 Carbine Buttstock

Install this Luth-AR 308 Mil-Spec Buffer Stock on your existing firearm's commercial or Mil-Spec buffer tube to experience the difference a more adjustable, lighter and stronger stock can make. Luth-AR designed each of these AR15 Stocks with a Picatinny rail on the bottom rear for the attachment of your favorite accessories that will enhance your precision and overall shooting experience. The extra-strength glass-filled nylon construction of the Luth-AR MBA-3 Carbine Stock Assembly makes it one of the lightest on the market while still offering uncompromising durability for any use. Length-of-pull, height and cheek rise are all adjustable to make your firearm finally feel like it's truly yours. Plus, there's even sling attachment points so that you can comfortably carry your firearm however you'd like. Unlike other buttstocks, this assembly won't make that annoying rattling noise thanks to the included flat bottom index screw. Advance your rifle build with the ergonomic and cost-effective Luth-AR MBA-3 Modular Buttstock Assembly.

Specifications for Luth-AR MBA-3 Carbine Buttstock:

Manufacturer:	Luth-AR
Gun Type:	Carbine
Weight:	18.5 oz
Length:	8.75 in
Condition:	New
Gun Make:	AR Platform
Country of Origin:	USA
Fabric/Material:	6061-T6 Aluminum

Features of Luth-AR MBA-3 Carbine Buttstock

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 MBA-3 and MBA-4 are available in Black or Flat Dark Earth
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.
The MBA-3 Carbine buttstock is NOT interchangeable with A2 standard buffer tube. You will need to purchase a MBA-1 or MBA-2 Rifle buttstock to fit A2 tubes

Package Contents:

Luth-AR MBA-3 Carbine Buttstock

What firearm models does the manufacturer say Luth-AR MBA-3 Carbine Buttstock is compatible with?

The manufacturer suggests that Luth-AR MBA-3 Carbine Buttstock is compatible with AR-15, AR-10

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Luth-AR MBA-3 Carbine Buttstock Orderable Models

List of Orderable Models

Luth-AR MBA-3 Stock Assembly, Black, MBA-3 , MPN: MBA-3 , UPC: 862388000122 , Code: 3FN-BSC-MBA3S-MBA-3
Luth-AR MBA-3 Stock Assembly, FDE, MBA-3F , MPN: MBA-3F , UPC: 859819007003 , Code: 3FN-BSC-MBA3S-MBA-3F
Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, Black, MBA-3K-M , MPN: MBA-3K-M , UPC: 859992007418 , Code: 3FN-BSC-MBA3S-MBA-3K-M
Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, Black, MBA-3K308-C , MPN: MBA-3K308-C , UPC: 859992007388 , Code: 3FN-BSC-MBA3S-MBA-3K308-C
Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Black, MBA-3K308-M , MPN: MBA-3K308-M , UPC: 859992007395 , Code: 3FN-BSC-MBA3S-MBA-3K308-M
Luth-AR MBA-3 Stock Assy. with Commerical .223 Kit, Black, MBA-3K-C , MPN: MBA-3K-C , UPC: 859992007401 , Code: 3FN-BSC-MBA3S-MBA-3K-C
Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, FDE, MBA-3FK-M , MPN: MBA-3FK-M , UPC: 859992007456 , Code: 3FN-BSC-MBA3S-MBA-3FK-M
Luth-AR MBA-3 Stock Assy. with Commerical .308 Kit, FDE, MBA-3FK308-C , MPN: MBA-3FK308-C , UPC: 859992007425 , Code: 3FN-BSC-MBA3S-MBA-3FK308-C
Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, FDE, MBA-3FK308-M , MPN: MBA-3FK308-M , UPC: 859992007432 , Code: 3FN-BSC-MBA3S-MBA-3FK308-M

Luth-AR MBA-3 Carbine Buttstock Unavailable & Discontinued Models

List of Unorderable Models

Open Box, Dealer Demo, Luth-AR MBA-3 Stock Assembly, Black, MBA-3 , MPN: MBA-3-DMO , Code: 3FN-BSC-MBA3S-MBA-3-DMO
Open Box, Dealer Demo, Luth-AR MBA-3 Stock Assembly, Flat Dark Earth, MBA-3F , MPN: MBA-3F-DMO , Code: 3FN-BSC-MBA3S-MBA-3F-DMO
DEMO, Luth-AR MBA-3 Stock Assembly, Black, MBA-3 , MPN: MBA-3-DEMO , Code: 3FN-BSC-MBA3S-MBA-3-DEMO
Open Box, Dealer Demo, Luth-AR MBA-3 Stock Assy. with Mil-Spec .223 Kit, Black, MBA-3K-M , MPN: MBA-3K-M-DMO , Code: 3FN-BSC-MBA3S-MBA-3K-M-DMO
Luth-AR MBA-3 Stock Assy. with Commerical .223 Kit, FDE, MBA-3FK-C , MPN: MBA-3FK-C , UPC: 859992007449 , Code: 3FN-BSC-MBA3S-MBA-3FK-C
Open Box, Dealer Demo, Luth-AR MBA-3 Stock Assy. with Mil-Spec .308 Kit, Black, MBA-3K308-M , MPN: MBA-3K308-M-DMO , Code: 3FN-BSC-MBA3S-MBA-3K308-M-DMO

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Luth-AR MBA-3 Carbine Buttstock Up to $14.34 Off w/ Free S&H — 9 models

Made in USA

Product Info for Luth-AR MBA-3 Carbine Buttstock

Specifications for Luth-AR MBA-3 Carbine Buttstock: