Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Daily Deal: Eylar 250th USA Rifle Case w/ RAGAR Foam $259.99 $179.99- Get Yours! 

BRN AR-15 Barrel Nut Shim Kit
BRN AR-15 Barrel Nut Shim Kit
BRN AR-15 Barrel Nut Shim Kit
BRN AR-15 Barrel Nut Shim Kit
BRN AR-15 Barrel Nut Shim Kit
BRN AR-15 Barrel Nut Shim Kit
None
MadeInUsa MadeInUsa OFF

BROWNELLS - BRN AR-15 Barrel Nut Shim Kit

16 Reviews
BRN AR-15 Barrel Nut Shim Kit
Brownells #
084000461
MFR #
BARREL NUT SHIM KIT
UPC
050806022232
$2.58
Coupon Code
Purchase Limit Help

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

Specifications
Color:
Silver
Material:
Stainless Steel
Make Model Fit:
AR-15.Universal
Restriction
Gun Part Restrictions:
Yes
View US State Restrictions
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

What is the BROWNELLS - BRN AR-15 Barrel Nut Shim Kit?

BARREL NUT SHIM KIT

AR-15 barrel nut shim kit allows you to index the barrel nut so you have perfect barrel nut / gas tube as well as top rail alignment, within the recommended barrel nut torque ranges. Shims can be used individually or combined to get the desired thickness. Kit comes with (2) .001", (2) .003", and (1) .007" thick shims. The shim fits between the barrel extension and the barrel nut. Will not affect headspace.


.

See all of our AR15s and AR15 parts here.

Gun Part Restriction
Gun Parts have restricted shipping to CA.

Video poster
Please select a FFL Dealer
or
7 dealers near
Distance:
10miles
arrow-down
Sort by:
Nearest first
arrow-down
pin wrong
No dealers found

Please search by another zipcode to find the nearest dealer.

Close
Brownells Retail Store
Phone Call
Pin in
Clock
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Switch view map
7 dealers near

Alternative products

Left Badge
Right Badge OFF  
5 Stars

200

300

Add on

Left Badge
Right Badge OFF  
5 Stars

200

300

BARREL NUT SHIM KIT REVIEWS

4.7
16 Reviews
5 Stars
88%
4 Stars
6%
3 Stars
0%
2 Stars
0%
1 Stars
6%
Reviews Summary
The Barrel Nut Shim Kit is highly praised for its effectiveness and ease of use in achieving proper alignment for barrel nuts. Customers appreciate its range of sizes and the quality of materials. Issues with missed orders and shipping delays were noted, but most reviews emphasize its indispensable role in builds, recommending it as a must-have for precision fittings.
What Reviewers Are Saying
Product Effectiveness
85%
Many users highlight the effectiveness of the shim kit in ensuring proper alignment and fit of barrel nuts, making the installation process smoother and reducing the need for guesswork. This theme is consistent with the majority of feedback, showing its crucial role in achieving the desired torque and alignment.
Quality of Materials
75%
Reviewers frequently commend the high-quality stainless steel used in these shims, suggesting durability and reliability in their construction. This positive perception further enhances the product's value among enthusiasts and professionals alike.
Ease of Use
70%
Customers appreciate the straightforward nature of the shim kit, noting that it simplifies the process of aligning barrel nuts. The clear markings of the shims and the variety of thicknesses available contribute to a user-friendly experience, making it a favorite among builders.
Customer Service and Shipping Issues
40%
A significant number of reviewers expressed frustration over order fulfillment and shipping delays, impacting overall satisfaction. While the product itself is highly regarded, these service-related issues detract from the user experience for some customers.
Value for Money
60%
Several users highlight the kit as an inexpensive yet essential tool for any armorer's kit, with many suggesting buying multiple kits for convenience. The overall perception is that the kit provides excellent value given its performance and importance during builds.
Need for Instructions
30%
A few users noted the absence of instructions for less knowledgeable consumers, suggesting that additional guidance could improve user experience. While effective, clear instructions would benefit those unfamiliar with barrel nut installation techniques.
5
Shims
Good quality and price never had a need for them till now so ordered a few sets just in case
by DAVID KISH on May 26, 2026
Verified Purchase
Was this review helpful? 0
5
1 Shim and done!
Couldn't get AR15/M16 Retro bbl nut to time properly, added one of the thinnest shims and 30 lbs torque, Gas tube lined up perfectly. Good price shims well marked.
Would you recommend this? Yes, I would recommend to a friend
by ROBERT E. BURNS on October 15, 2025
Verified Purchase
Was this review helpful? 0
5
Order
Very happy
by JOSEPH LUCAS on February 17, 2025
Verified Purchase
Was this review helpful? 0
5
Still Rocking the Top
40 years and still the same great support as always.
by ROBERT ECKLUND on August 02, 2024
Verified Purchase
Was this review helpful? 0
5
Saved my axe!
Worth having around. Aero Precision bbl nut (for AP handguard) only had 4 x gas tube hole openings in the entire nut. With none of the 8 x .001" included shims installed, the closest gas tube opening in the nut had just barely moved past the gas tube opening in the upper receiver when torqued 3 x and set to the min 30 ft lbs on the last turn. Ended up needing .011" total of added shims to get to the next opening in the bbl nut. So, a .007", .003" from this kit, and one of the .001" shims from the 8 that came with the AP handguard kit were needed to get it perfect at 42 ft lbs torque. Well done!
by RC on May 16, 2022
Was this review helpful? 1
View All 16 Reviews
Customer Questions
0 Questions