Forster‘s 7.62×39 No-Go Headspace Gage (brand part no. HG762X39N) checks chamber length on the AK and SKS-pattern rifles built around the 7.62×39 cartridge, confirming the chamber hasn’t been cut too long per S.A.A.M.I. specification. The gauge measures 1.255 inches, and if a bolt or bolt carrier closes fully on it, that’s a sign of excessive headspace, which can be dangerous and can hurt accuracy. It’s a standard check for anyone building or inspecting a 7.62×39 rifle from a parts kit or surplus action.

Key Specifications

• It’s built as a No-Go gauge for the 7.62×39 chamber.
• The gauge measures 1.255 inches, per S.A.A.M.I. specification.
• It’s commonly used on AK and SKS-pattern rifles.

Frequently Asked Questions

What rifles is this gauge commonly used on? AK and SKS-pattern rifles chambered in 7.62×39.

What does the 1.255-inch measurement represent? The S.A.A.M.I. No-Go length used to confirm the chamber hasn’t been cut too long.

Buy the Forster 7.62×39 No-Go Headspace Gage

A S.A.A.M.I.-spec No-Go gauge is a smart check before firing a rebuilt AK or SKS-pattern rifle. Browse our gunsmithing tools selection and order from our Lubbock, Texas gun shop for fast shipping.