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Forster Rimmed & Belted Headspace Gage
As Low As $10.49 Save Up to 76%
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Most Helpful Positive Review Great product, would recommend
Starting 4th build and decided it's time to head-space all my AR's - new and old. I've never had any issues, but for the cost to know for sure you are withing spec, it's really something everyone who builds or swaps bolts, uppers, etc. should have (IMHO). Quality seems very good, packaging is great, they are labeled clearly and I would expect them to last a life time or longer - not many things fall into that category any more.
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A must for barrel swaps

by Rem700Shooter, Verified Owner from TN, United States Written on August 16, 2025
Great finish, great tool. A must have for barrel swaps. Keep oiled to prevent rust.
Would recommend: Yes
Was it helpful to you? Yes | No

go,no go and field guage all work great

by Jrobe, Verified Owner from TX, United States Written on June 11, 2024
I bought the .223 rem go,no go and field guages. They work well for my ar builds and seem to be good quality. Just make sure to read the instructions if you are new to byo like i am. I didnt know you had to remove the ejector and extractor for them to work correctly
Would recommend: Yes
Was it helpful to you? Yes | No

Forster go gauge

by Den, Verified Owner from NV, United States Written on May 4, 2024
I've always been satisfied with all the Forster products I have. This is no exception. Nicely finished and packaged.
Would recommend: Yes
Was it helpful to you? Yes | No

perfect companion for the go guage

by slkzic, Verified Owner from ME, United States Written on December 14, 2023
Just used it last night to head space a new 22 Creedmoor barrel. Now I’m ready for some coyotes. Will probably get out to the range to break the barrel in next week sometime. Next purchase will be a thermal or NV scope.
Would recommend: Yes
Was it helpful to you? Yes | No

perfect head space guage

by slkzic, Verified Owner from ME, United States Written on December 14, 2023
Just used it last night to head space a new 22 Creedmoor barrel. Now I’m ready for some coyotes. Will probably get out to the range to break the barrel in next week sometime. Next purchase will be a thermal or NV scope.
Would recommend: Yes
Was it helpful to you? Yes | No

Safety first!

by gene, Verified Owner from OH, United States Written on October 27, 2023
The Forster Rimless Headspace Gage is a must if you are building a new weapon or checking a used one you are thinking about buying... It easily can fit in your pocket to bring with you or fit in a small parts drawer on your build bench... High quality and affordable.
Would recommend: Yes
Was it helpful to you? Yes | No

Forster headspace gauge

by Michael, from MA, United States Written on November 6, 2022
Purchased from Optics Planet at a good price and quick delivery. Very pleased with this purchase and the quality of the item. Forster products are known for their quality, this item is no acception. I used this gauge to determine headspace for my K98 barrel replacement.
Pros:
  • Quality
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect, will buy again

by Bobby H, Verified Owner from OH, United States Written on February 17, 2021
Works just as described, seems good quality will hold up. It chambered right up when it was suppose to and didnt when it didnt. Pretty self explanatory. Not sure what else to say about this product. Other than id buy them again
Would recommend: Yes
Was it helpful to you? Yes | No

Works great

by Chris, Verified Owner from OH, United States Written on July 31, 2020
Was able to verify my head space on a recent build and the rifle did not blow up in my face. I didn't verify the dimensions with a micrometer but if the fact that the rife did in fact not blow up in my face represents any sort of accuracy, then this product gets 5 stars from me.
Would recommend: Yes
Was it helpful to you? Yes | No

Quality headspace gauage

by Brian T, Verified Owner from WA, United States Written on May 26, 2020
This is my second set of Forster headspace gauges that I have purchased. The first set was for a .223 Wylde chambered build and used 223/5.56 gauges. Most recently, I also Purchased the Forster Go and No Go gauges for .300 Blackout build. No issues with either set and it gave me peace of mind knowing the the bolt is headspaced to the barrel correctly. I will continue to buy Forster headspace gauges in the future for future builds in other calibers.
Pros:
  • Quaility made
Cons:
  • expenisive but worth it
Would recommend: Yes
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