Firewerks Headspace Gauges

Firewerks Headspace Gauges are made from high quality stainless steel for corrosion resistance, heat treated for wear resistance, and precision ground for superb accuracy.


Firewerks Headspace Gauges are made from high quality stainless steel for corrosion resistance, heat treated for wear resistance, and precision ground for superb accuracy.  If you are not completely satisfied with the quality, we will refund your purchase 100% AND pay for the return postage.


Firewerks headspace gauges are the original and only coin-style gauges on the market that are made from stainless steel for superior corrosion resistance.  Manufactured right here in the USA, Firewerks headspace gauges are precision built and made to last.  We GUARANTEE the quality of our products!


Every single gauge is precision ground to very tight tolerances with top of the line machines.  Then, each gauge is double checked by hand with micrometers before it ever gets packaged and leaves our shop.  (BEWARE of misleading comments from our competitors that say our gauges are inaccurate and not high quality.  We stand by our 100% money back guarantee.)


Easily identify which gauge is which with the laser etched letter identifiers – “G” (go gauge), “N” (no-go gauge), “F” (field gauge). Now you no longer have to guess what gauge you are looking at. Also, each gauge has the caliber laser etched on the back to help prevent mixing up different gauges.


As easy as 1-2-3. These high quality stainless steel Go, No-go, and Field headspace gauges are specially designed so that you don’t have to remove the extractor to check your rifle’s headspace. Simply place the gauge on the bolt face with the notch fitting around the extractor and then close the bolt (or try to).


Whenever you buy a used gun, always check the headspace before firing – especially military surplus rifles. These gauges are also essential when chambering a new barrel to ensure a tight, accurate, safe chamber.


View PDF Instructions.


Warning: Headspace is only one factor to check when determining the safety of a gun. We highly recommend that all guns be inspected and serviced by a qualified gunsmith prior to operation. and Firewerks are not liable and/or legally responsible for any damages to the gun caused by misuse of headspace gauges, misfortune, injury(s) and/or death(s) due to improper use of headspace gauges, firearm defects, gun malfunctions, ammunition, hand loading practices, condition of firearm, or any other factors related to the use of any firearm.