155mm gun
- (1938) 155mm gun M1 on carriage M1
- (1945) 155mm gun M2 on carriage M2
- (1945) M40 Gun Motor Carriage (with M2), later M59 (on a widened and lengthened Medium Tank M4A3 chassis)
155mm howitzer
- (1942) 155mm howitzer M1, later M114
- (1945) M41 Howitzer Motor Carriage (with M114) (on a lengthened M24 Chaffee tank chassis)
- (early 1950s) M44 self-propelled howitzer (based on the M41 Walker Bulldog tank chassis)
8-inch howitzer (203mm)
- (1939) 8-inch howitzer M1, later 203mm howitzer M115
- (1945) M43 Howitzer Motor Carriage (on a widened and lengthened Medium Tank M4A3 chassis)
240mm howitzer
- (1944) M1