5.45X39 GO NO-GO Gauge Set CIP MIN & MAX

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5.45X39 GO NO-Go Set MADE IN USA

Headspace gauges from precision ground hardened US steel. Headspace is the distance between breech face and the base of the cartridge when the action is closed. It is best to remove the extractor, ejector, and firing pin from the bolt to achieve optimal results when checking headspace. The use of both GO and NO-GO headpsace gauges is essential for all newly reamed chambers or a newly installed barrel to a trunnion . This ensures a safe and accurate chamber. Warning – Never force an action closed on any gauge.


  • 5
    5.45 headspace gages

    Posted by Rob on Aug 24th 2021

    Arms of America has these at a great price. Shipped quickly. These are an important tool for any builder.

  • 4
    Woked well

    Posted by Evan on Aug 10th 2021

    Worked well in my bulgarian 5.45 build.

  • 5

    Posted by Matthew M. on Dec 19th 2020

    I bought these headspace gauges for my AK-74 rifle as for high volume shooting . It wouldn't hurt to check the head space after several hundreds of rounds down the pipe . These are very high quality head space gauge sets and a must have for the AK builder or high volume shooters .

  • 4
    go gauge

    Posted by Ded on Aug 6th 2020

    quality product. I also have Clymer's 762x39 go/no gauge. Fast order process.