Description
Gauge, Barrel, Wear, Muzzle, .30 caliber.
ANM2, M1917, M1918, M1919, M37 – BMG .30 caliber barrel muzzle wear gauge. Insert into the front of the barrel to check the muzzle wear. Graduated in .001 Increments. New Condition.
Optional Gauge:
Breech Bore Taper, Cal .30 C-3940, .30 cal., with 7.62mm adapter. Insert into the breech (rear) end of the barrel to check throat erosion: C-3940 .30 cal. Barrel Taper Breech Bore Gauge.
