FREE SHIPPING On All Gun Parts!
Use Code: PARTSFS In Checkout

Daily Deal: Brownells Premium Slide For Glock 43 w/ 407K Cut ~~$249.99~~ $199.99 - Get Yours!

AR-15 STOCK ASSY COLLAPSIBLE MIL-SPEC Reviews & Ratings

AR-15 COLLAPSIBLE STOCK ASSEMBLY (MIL-SPEC)

Collapsible buttstock similar to the current US GI M4 carbine stock provides convenient six-position length-of-pull adjustment to fit different-size shooters, including those wearing body armor. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Buttstock is made from extremely tough, fiberglass-reinforced, injection-molded nylon to resist impact, heat, moisture, extreme cold, and most cleaning solvents. Steel lock nut has four square notches and pre-cut detents for staking to lock plate. Available with Mil-Spec (nominal 1.14" O.D.) receiver extension tube. Stock interior diameter is matched to buffer tube O.D. for a snug fit that eliminates un wanted play and rattles.

SPECIFICATIONS:

Material: Aluminum and Fiberglass-Reinforced, Injection-Molded Nylon
Color: Matte Black
Length: 8-3/4" Overall Collapsed
Length: 11-3/4" Overall Extended
Kit Includes:
- Carbine Buffer Tube (MIL-SPEC)
- Carbine Buttstock (MIL-SPEC)
- Carbine Buffer and Spring
- AR-15 End Plate
- Castle Nut

See all of our AR15s and AR15 parts here.

View Product

Write a review

3 Stars

Reviews Summary

The AR-15 Stock Assembly from Brownell's receives mixed feedback. Many appreciate the solid construction and value for money, highlighting its ease of installation and minimal wobble. However, some reviewers express disappointment with the butt plate's quality and construction consistency. Overall, it's a decent choice for those seeking an affordable mil-spec stock.

What Reviewers Are Saying

Product Quality

65%

Many customers praise the quality of the AR-15 stock assembly, noting that it meets their expectations and performs well for its price point. However, some have encountered issues with specific parts like the butt plate and buffer tube, suggesting inconsistency in manufacturing across batches.

Installation and Fit

70%

Reviewers generally find the stock easy to install and appreciate its snug fit once adjusted. The design ensures minimal wobble, which enhances the overall user experience. A few customers report variability, but most agree that it fits well on their AR builds.

Value for Money

75%

The price point of this stock assembly is highlighted repeatedly, with several customers feeling they received good value for the quality provided. Many users compare it favorably against more expensive brands, asserting it holds its own without sacrificing functionality.

Aesthetics and Design

30%

While most reviews focus on functionality, a few customers note the stock's design varies from expectations set by product images, particularly regarding visual elements and finishing. Some express disappointment in aesthetic aspects but still recognize the stock's effective performance.

Shipping and Customer Service

40%

Numerous reviews mention Brownell's solid reputation and reliable customer service, highlighting efficient shipping practices and overall satisfaction with the purchasing experience. This builds confidence among repeat customers.

Sort by Filter by rating

Perfect

I installed this butt stock on a Bearcreek lower with no problems good quality it's just a basic M4 collapsible stock I will buy again for the next AR build thanks Brownells.

Would you recommend this? Yes, I would recommend to a friend

by Matthew M. on January 31, 2026

Verified Purchase

Was this review helpful? 0

AR-15 Stock Assembly

No wobble, nice and tight........great collapsible stock!!!!

by Eric Story on November 16, 2023

Verified Purchase

Was this review helpful? 1

Works As It Should

Installs, adjusts, and functions as it should.

AR15 collapsible stock

I haven't used this one yet but I have bought several in the past and was pleased with this item. For a occasional shooter this is ideal. It is tight when extended and stays firm.

Always good quality

there really isn't anything bad to say about this stock. Good quality and fast shipping by Brownells

great product,

Its a great product with an even greater price.well made.

Outstanding value!

These are great AR-15 stock assemblies. I've used at least 15-20 of them for various builds, and have been pleased with the results. They are easy to put on the lower receiver, tighten securely, and easily adjustable. I've paid more for stocks, but they didn't outdo these stock assemblies. A great stock at a great value!

High quality low price!

Just bought another of these stock assemblies for another lower build. Nice fit and finish. Comes with everything you need.

Works well.

Finished off the build perfectly.

Pleasantly surprised and satisfied!

The stock is different than what is in the picture. However the stock is a near identical copy of a colt m4 buttstock. The buffer tube, hardware, spring and buffer are all quality parts. Stock to buffer tube fit is excellent very minimal wobble compared to other collapsible stocks. Overall I'm very happy with the product and would highly recommend this purchase to anyone looking for clone colt m4 stock.