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BARREL NUT ALIGNMENT GAUGE
BARREL NUT ALIGNMENT GAUGE
BARREL NUT ALIGNMENT GAUGE
BARREL NUT ALIGNMENT GAUGE
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BROWNELLS - Barrel Nut Alignment Gauge

12 Reviews
Barrel Nut Alignment Gauge
Brownells #
080216014
MFR #
AR15/M16 BARREL NUT ALIGNMENT
UPC
050806103900
$7.99
Coupon Code
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Specifications
Item Width (Inches):
0.178
Color:
Silver
Quantity:
1
Item Length (Inches):
3.000
Make Model Fit:
AR-15.Universal
Material:
Steel
Restriction
Gun Tool Restriction:
Yes
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International purchase information

What is the BROWNELLS - Barrel Nut Alignment Gauge?
BARREL NUT ALIGMENT GAUGE

Fits into the end of the bolt carrier key to ensure that the barrel nut is properly aligned during installation of AR-15/M16 barrel. Improper alignment can damage the bolt carrier key and/or the gas tube.




SPECIFICATIONS:
  • Material: Steel
  • Diameter: 0.178"
  • Length: 3"

See all of our AR15s and AR15 parts here.

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BARREL NUT ALIGNMENT GAUGE REVIEWS

4.1
12 Reviews
5 Stars
67%
4 Stars
8%
3 Stars
8%
2 Stars
0%
1 Stars
17%
Reviews Summary
The Barrel Nut Alignment Gauge is appreciated for its effectiveness in ensuring proper gas tube alignment, providing a sense of safety and confidence during firearm assembly. However, concerns were raised regarding the rough finish and quality control, with some users suggesting it could be made easily at home. Overall, it is seen as a valuable, budget-friendly addition for firearm enthusiasts.
What Reviewers Are Saying
Effectiveness
70%
Many reviewers highlight the effectiveness of the alignment gauge in ensuring that the gas tube aligns correctly, thereby preventing potential issues in firearm assembly. Users feel more confident when utilizing this tool, as it simplifies the process and mitigates the risk of accidents during assembly.
Product Quality
60%
There are mixed feelings about the build quality of the gauge. While some users found it functional and effective, numerous reviews criticized the rough finish and overall quality, likening it to subpar craftsmanship that does not meet higher standards like those from well-known brands.
Price and Value
55%
The affordability of the gauge is frequently mentioned, with several reviewers emphasizing its low cost (around $7) as a major advantage. Many users agree that for the price, it is a worthwhile tool to have, although some believe it is not absolutely necessary for all firearm assembly tasks.
Alternative Methods
40%
Some users pointed out that while the gauge is useful, there are simpler methods (like using a gas tube) to achieve similar results. This suggests that while the tool serves its purpose, it may not be essential for all users, sparking a debate about the practicality of purchasing it.
Do-It-Yourself Options
30%
Several reviewers mentioned the possibility of creating a similar tool at home, indicating that although the gauge functions well, its simplicity leads to considerations of DIY alternatives. This suggests a perception that the tool may not be worth purchasing if one has basic crafting skills.
5
Barrel nut alignment Gauge
Worked perfect along with shim kit to get Gas tube alignment proper. Probably could have used a drill bit in the gas key to do the same alignment test. But happy with this tool and will probably never have to use it again. No more Retro "builds" in the future.
Would you recommend this? Yes, I would recommend to a friend
by ROBERT E. BURNS on October 15, 2025
Verified Purchase
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5
handy
it takes the guess work out of making sure the gas tube aligns up correctly
by ROBERT OVERSTREET on October 19, 2024
Verified Purchase
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5
Just buy it!
Just what I needed. Little tools like this go a long way when building or maintaining your firearms. For the price it’s a must have for your tool box. Build with confidence knowing your barrel is correctly positioned, inexpensive tools like this saves you hundreds. Most important you avoid injuries from accidents caused by improper construction of your rifle, this is above all the most important.
by Jordan Nelson on December 14, 2023
Verified Purchase
Was this review helpful? 0
5
No problems here
Fit perfectly. Rough finish. Worked great. No problems here.
by buyer39 on February 09, 2021
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5
Don't leave home without
Follow instructions. I had functioning issues related to installing the wonderful JP handguard. Gun would cycle but not hold open or lock back. The dreaded gas tube misalignment disease. Used this tool on 4 upper builds. All function issued ceased. Problems solved.
by Ducky8 on February 03, 2021
Was this review helpful? 1
View All 12 Reviews
Customer Questions
0 Questions