Precision headspace gage for .223 Rem chambers. Essential gunsmithing tool ensures safe, accurate rifle chamber dimensions within industry standards.
Proper headspace measurement is the foundation of safe, accurate rifle performance. Forster Headspace Gages represent the gold standard in chamber inspection, manufactured with exacting precision to ensure your rifle's safety and reliability.
Headspace is the distance between the breech face and the base of the cartridge when the action is closed. Excessive headspace creates a dangerous condition—unsupported brass can rupture during firing, allowing high-pressure gases to escape rearward with potentially catastrophic results.
GO Gage: If your rifle closes on the GO gage, the chamber accepts all ammunition manufactured within S.A.A.M.I. (Sporting Arms and Ammunition Manufacturers' Institute) specifications. This is the baseline for safe operation.
NO GO Gage: If your rifle closes on a NO GO gage, your chamber may have excessive headspace and requires professional evaluation.
FIELD Gage: If your rifle closes on the FIELD gage, the chamber is dangerously close to or exceeds S.A.A.M.I. maximum specifications and should not be fired.
Most gunsmiths chamber rifles with headspace falling between GO and NO GO dimensions. This gage is an essential tool for anyone building, repairing, or inspecting .223 Rem rifles. Forster's meticulous manufacturing ensures accurate, reliable measurements every time.