SKU: FPHG762X39N
UPC: 757253990755
MPN: HG762X39N
The Forster Headspace Gage NO GO 7.62x39 – 1.255" SAAMI is the precision measurement tool that gunsmiths and serious reloaders rely on to verify rifle chamber dimensions and ensure safe ammunition performance. Headspace is the critical distance between the bolt face and the cartridge base when the action is closed; excessive headspace creates dangerous conditions where unsupported brass can rupture under firing pressure, forcing high-velocity gas rearward past the chamber.
This NO GO gage is calibrated to the SAAMI specification of 1.255 inches for 7.62x39 chambers. The NO GO gage establishes the maximum acceptable headspace limit—if a cartridge chambers in a NO GO gage, headspace has exceeded safe tolerances and the chamber requires correction. Used alongside a GO gage (sold separately), NO GO verification prevents out-of-spec chambers from reaching the firing line. The compact 2 x 1 x 3 inch design fits easily into any gunsmith's toolkit and weighs just 0.07 lbs.
This tool is essential for anyone building or maintaining 7.62x39 rifles—whether working with Soviet-pattern bolt actions, modern piston systems, or precision gas-gun builds where chamber consistency directly affects accuracy and safety. Forster Products' precision gages are the standard in gunsmithing shops and quality-focused reloader operations. The 1.255" SAAMI specification ensures compatibility with all properly manufactured 7.62x39 chambers and ammunition manufactured to standard tolerances.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
