US M30 4.2 inch Mortar, M2 Base "Four Point Deuce"

Another M2 4.2 inch Mortar at the Pennsylvania Military Museum in Boalsburgh, PA

Caliber - 4.2 inches Rifled Barrel
Action - Muzzle Loaded, Automatic
Muzzle Velocity - 840 fps
Range - 5,630 yds
Shell Weight - HE - 24.4lbs, Smoke - 25.5 lbs, Chemical - 28.6lbs Spin Stabilized
Rate of fire - 5 rounds per minute sustained, 20 rounds per minute, rapid fire
Barrel Length - 4ft
Weight - 330 lbs
Produced By -
Entered Service - 1924