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The 6N1 M1 Garand Gauge
The 6N1 M1 Garand Gauge eliminates the need for carrying or storing many different gauges for the M1 Garand. It was created from a need to consolidate gauges into a compact package offering an elegant solution to the clumsy alternative to having to search for the correct gauge for the task at hand.
The 6N1 M1 Garand Gauge performs the following functions:
Bullet Guide - Pre 1949 - Post 1949
Muzzle Go-No Go
Bolt/Firing Pin Minimum/Maximum
Gas Cylinder Bearing Go-No Go
OP Rod Go-No Go
Front Sight Widths to determine manufacturer
The 6N1 M1 Garand Gauge is made from 4130 Cr-Mo steel and is finished in black oxide, or "parked" just like the M1 Garand. The lettering is laser etched for a lifetime of wear and tear.