Must have tool is used to support the M1 Garand Gas Cylinder when removing or tightening either the gas plug/ lock or front sight screw.
Prevents loosening of the gas cylinder and barrel splines by supporting the gas cylinder and taking all the sideway force off the splines when working with the sight screw or cylinder lock.
Use only to support the gas cylinder to prevent sideways forces on the splines.
Must have to maintain a match grade fit between the gas cylinder and barrel splines.
Brand New, blued steel, made in the USA by Strobel.
Same design as used in the M1 Garand Shop Manual. Ships in the USA only, No export or APO.