Description
Gauge, Breech (rear) Bore Taper, Cal .30, C-3940. Used to measure throat erosion. Browning ANM2, M1919, M1917 and M37 machine gun barrels. Graduated in .001 increments. Wide reject grooves for quick field serviceability tests. Includes adapter ring to measure 7.62mm ANM2, M1917, M1919 and M37 barrels. Simply slide the ring over the gauge and read at the edge of the gauge. New.
Optional Gauge:
.30 cal. Muzzle (front) Wear Gauge: .30-MUZZLE-WEAR-GAUGE







































































































