Forster Headspace Gauges are crucial for ensuring the safety and precision of a rifle's chamber, especially when chambering a new barrel or purchasing a used firearm.
The gauges are manufactured to SAAMI specifications, with the .30-06 Springfield Go Gauge being .0005 inch under 7.62 NATO NO-GO specs for safety.
These gauges are machined steel and are interchangeable among various calibers, such as 30-06 Springfield, 270 Winchester, and more, as long as they share the same stock number.