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Q&A for Forster Rimmed & Belted Headspace Gage — 8 Questions & 11 Answers

Name Forster Rimmed & Belted Headspace Gage (5)
As Low As $40.89 Save Up to 24%
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Q
J.T., member, from MT, United States, asked on March 08, 2024

Does this Forster Rimless Headspace Gage, NO GO length, for 223 Rem also work for 5.56?

Manufacturer Answer
A
Answered by Forster Products, Manufacturer from IL, United States, on March 26, 2025

Yes, the 223 No Go will provide length information on a 5.56 as well.

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Q
Tim, member, from ND, United States, asked on February 16, 2018

are these the correct gages to use for 223 Wylde

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on March 20, 2019

The three options marked for .223 Rem will work.

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Q
JoeyV, member, from NV, United States, asked on August 18, 2025

What is the difference between the NO GO and the FIELD gage? Why would I need both?

Manufacturer Answer
A
Answered by Forster Products, Manufacturer from IL, United States, on August 21, 2025

For Forster the NOGO gage is more of a mid-range gage used by gunsmiths to help set the proper tension. The field gage is your true fail gage (if a rifle closes on this you should consult your gunsmith). Likely both gages are not needed, however by using both you have a clearer picture as to where your rifle is head-spaced.

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Q
Barny, member, from IA, United States, asked on November 05, 2021

do they have any in 450 bushmaster

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on January 21, 2022

None of the Forster Rimless Headspace Gage's are available in 450 Bushmaster. And unfortunately, we do not carry any other options for 450 Bushmaster.

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Q
Night Driver, member, from ID, United States, asked on April 16, 2021

Does the .223/5.56 work with .300 Blackout?

Expert Answer
A
Answered by Ryan Tarczynski, Gear Expert, from IL, United States, on June 29, 2021

No it does not. Would need 300 blackout for 300 blackout.

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Q
Bill, guest, from NJ, United States, asked on February 03, 2019

would you have to disassemble the bolt on a m1 garand when using a riles headspace guage?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on October 17, 2019

Yes, you have to disassemble the bolt on the M1 Garand to check headspace with these.

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Q
Gill, guest, from TX, United States, asked on December 14, 2018

Is this for the 6.5 grendel?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on October 17, 2019

Unfortunately they do not make a version of these for 6.5 Grendel at this time.

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Q
jdhorndog, member, from NV, United States, asked on July 22, 2018

using this gage do you have to remove your extractor from the bolt in order for the headspace gage to fit?.

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on September 18, 2018

Yes, for best results with bolt action rifles, it is recommend to remove the extractor from the bolt.

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