Enjoy free shipping during the holidays! Shop now and get
Free Value Shipping
on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.
Enjoy Our Extended FREE RETURNS
We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended
Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended
return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later).
We'll even cover the cost of return shipping. Learn more about our
Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-58351d0c26c/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
Reviews & Ratings for Ergo Barrel Nut Shims - 4 Pack
— 5 reviews — Page 1
these shims are easily bent so be careful handling them so as to not crease them or put a fold in them like i did,
but i screwed the barrel nut tight and i don not think it will make a difference if you are able to flatten it out
by
William Bair,
from KS, United States
Written on August 3, 2021
It took all 4 shims but the hand guard is lined up perfectly was starting to wonder if theses would work would definitely us these again on another build. Price was good and shipping was fast. Might just order these again with my next build.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?
by
Rick,
Verified Owner
from TX, United States
Written on April 9, 2021
This is a "must have" for assembling an upper that uses a traditional USGI barrel nut, where the barrel nut has to be timed correctly for the gas tube to be inserted. This 4-pack came packaged in Ergo packaging, and worked exactly as it should.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?
by
Hawk,
from WV, United States
Written on February 16, 2021
Bought these and ended up only using one of them but it got the handguard where it needed to be. All in all timing a handguard isn’t that fun so I might just stick with the slip on ones for now on. If I ever do have to time a handguard again, I’ve got spares.
Best Used for:
Timing a handguard
Would recommend: Yes
0 of 0 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?