The Forster Products, Inc. 30-40 Krag Field Gauge is essential for measuring rifle chamber length to ensure safety and accuracy, especially when chambering a new barrel or buying a used gun.
Made to SAAMI specs, the gauge is .0005 inch under 7.62 NATO NO-GO dimensions for safety, ensuring a tight and safe chamber.
Forster headspace gauges are machined steel and interchangeable between calibers that share the same stock number, offering a wide range of applications.