Guns3-inch Gun M73-inch Gun M73-inch Gun M7Caliber76.2 mmBarrel length50 calibersVehicles 4193719381939194019411942194319441945M10 (3-inch)4,993Mar 1943 – May 1943Jul 1943 – May 1945≈ Feb 1944 – Aug 1945≈ May 1944 – May 1945≈ May 1944 – Feb 1945≈ May 1944 – May 1945Jun 1944 – May 1945≈ Jun 1944 – May 1945≈ Jun 1944 – May 1945≈ Jun 1944 – May 1945≈ Jul 1944 – May 1945Aug 1944 – May 19453in SP M10 Mk I3in SP M10 Mk IIM10A1 (3-inch)1,413