The Forster Headspace Gauge is essential for checking the chamber length of rifles, crucial for safety and accuracy, especially when chambering new barrels or purchasing used firearms.
These gauges are manufactured to SAAMI specifications, with the .22 Long Rifle Field Gauge being .0005 inch under the 7.62 NATO NO-GO dimension for safety.
Forster's headspace gauges are machined steel, vary in size by caliber and gauge style, and are interchangeable between multiple calibers within the same stock number.