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AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY
AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY
AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY
AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY
None
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BROWNELLS - M4 Mil-Spec Buffer Tube Assembly

22 Reviews
M4 Mil-Spec Buffer Tube Assembly
Brownells #
080001039
MFR #
NONE
UPC
050806110830
$54.99
Coupon Code
Purchase Limit Help

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International purchase information

Specifications
Buttstock Fit:
Mil-Spec
Color:
Black
Buffer Tube Type:
Mil-Spec
Make Model Fit:
AR-15.Universal;AR-308.Universal
Quantity:
1
Material:
Aluminum
Restriction
Gun Part Restrictions:
Yes
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What is the BROWNELLS - M4 Mil-Spec Buffer Tube Assembly?

AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY

Precision made from 6061 aluminum, this buffer tube is the correct diameter of 1.148" to accept any MIL-SPEC carbine buttstock on the market. Hardcoat anodized to ensure a durable and long lasting finish in even the toughest conditions. All buffer tube asssembly parts conveniently packaged together for your next build.



SPECIFICATIONS:

  • Six position AR-15/M16/M4 receiver extension assembly
  • Includes Mil-Spec receiver extension/buffer tube, receiver lock plate, lock-nut/castle nut, carbine buffer and carbine buffer spring
  • Buffer tube is Mil-Spec diameter and 6061 aluminum
  • Carbine buffer weight is 3 oz
  • Buffer spring is 17-7 stainless steel
  • Hard Coat Anodized Finish
  • Color: Black

See all of our AR15s and AR15 parts here.

Gun Part Restriction
Gun Parts have restricted shipping to CA.

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AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY REVIEWS

4.5
22 Reviews
5 Stars
77%
4 Stars
5%
3 Stars
9%
2 Stars
5%
1 Stars
5%
Reviews Summary
The AR-15/M16 MIL-SPEC BUFFER TUBE ASSEMBLY generally receives positive feedback for its easy installation and solid performance. Customers praise its fitment and machining quality, especially for builds. However, some issues arose regarding quality inconsistencies, particularly with certain components. Overall, it meets expectations but varies in manufacturing quality.
What Reviewers Are Saying
Installation Ease
70%
Many reviews highlight the ease of installation as a significant advantage of this buffer tube assembly. Users appreciate that the product fits well with their builds, causing no issues during the setup process. This has led to a positive reception among DIY builders and those assembling AR-style rifles.
Quality Variability
45%
Several reviews express concerns regarding the overall quality of the product. Issues such as poor machining, inconsistent finishes, and failures of specific components like the buffer retainer were noted. This theme indicates that while some users found great quality, others faced significant problems, leading to a mixed perception of quality reliability.
Fit and Compatibility
60%
The buffer tube assembly generally receives commendations for its compatibility with a variety of stocks and receivers. Users have reported that it integrates well with different configurations, emphasizing its adherence to Mil-Spec standards, though not without some variances noted by a few reviewers.
Value for Money
50%
Many customers feel that the product offers good value for its price, especially when on sale. The performance and features relative to cost contribute to a favorable assessment, leading reviewers to recommend it as a budget-friendly option for builders.
Overall Performance
55%
The assembly is generally praised for its performance, with users reporting satisfactory function during use. While some noted concerns regarding specific issues, the majority felt that the product does its intended job effectively, thus aligning with user expectations.
5
Great
This is my go-to buffer tube kit or sometimes I get just a buffer tube itself never had a problem with them and I have used quite a bit on my builds and builds for my friends
Would you recommend this? Yes, I would recommend to a friend
by ROGER FREEZE on September 02, 2025
Verified Purchase
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5
Good Parts Kit
Used this kit on my .350 legend build, works great with my B5 stock (milspec). The part was in spec, zero issues during install and testing!
Would you recommend this? Yes, I would recommend to a friend
by PW on April 27, 2025
Was this review helpful? 0
5
Works Well
Needed it to finish my AR retro build. Decent quality, and was easy to install. No issues with it. Does exactly what it's supposed to do.
by Jimbo on July 05, 2021
Was this review helpful? 0
5
Great product
I needed a couple of milspec buffer tubes to replace the commercial ones i had for some new stocks. I have always gotten good products from Brownells. This was no different. They are well made and fit with no problems. Will continue to use Brownells and their products.
by Boomer on August 19, 2020
Was this review helpful? 2
5
Buffer assembly
A well made great product. Easy to install on your lower build
by Ron on May 05, 2020
Was this review helpful? 0
View All 22 Reviews
Customer Questions
18 Questions