was equipped with a single .50 caliber (12.7 mm) Browning M2HB machine gun for anti-aircraft or anti-personnel use, with 1,000 rounds of ammunition. Due to the difficulty in firing the .50 caliber machine gun directly to the front, the pintle was often repositioned to the front of the turret, or a .30 caliber (7.62 mm) Browning M1919A4 machine gun mounted there. The M36B1 retained the bow machine gun of the M4A3 Sherman tank, and had 2,000 rounds of ammunition for it. The crew had their personal weapons for self-defense. Variants 90 mm Gun Motor Carriage T71 Prototype 90 mm gun turret on 3-inch GMC M10A1 hull. Turret redesigned and standardized as M36 90 mm Gun Motor Carriage M36 90 mm gun turret on M10A1 GMC hull. 300 built at Grand Blanc from April–July 1944 with 413 at American Loco Co Oct-Dec 1944 and 500 at Massey-Harris June-Dec 1944 by converting M10A1. Montreal Loco Works built 85 in May–June 1945. 90 mm Gun Motor Carriage M36B1 90 mm gun turret on M4A3 Sherman hull and chassis. 187 built at Grand Blanc October-December 1944. 90 mm Gun Motor Carriage M36B2 90 mm gun turret on M10 hull. Armored covers for turret were added to some M36B2s. 237 produced by converting M10s at American Loco in April–May 1945. Operators Former operators : Bosnian Army used them as part of the Yugoslav Wars : Croatian Army used many during the Croatian War of Independence. : Free French & French Armed Forces Post war : Very few captured from Iran. : Iranian Army M36B1 used during the Iran–Iraq War : Italian Army NATO about 36 M36, post-war use, from July 1953 to 1956 in the SPAT Bns of the two Armoured Divisions, from 1956 to 1961 in two Corps-level SPAT Bns (109th and 110th), and from 1961 to 1975 in some of the SPAT companies attached to the Bersaglieri Regiments. : Pakistani Army used US-supplied M36s against the Indians in the Indo-Pakistani Wars of 1965 & 1971. : Republic of China Army acquired eight M36B2 in 1955 from France, at least two still remained in service through 2001. : Serbian Army used some during the Yugoslav Wars : Slovenian Army used some during the Ten-Day War : First received in October 1950, around 200 vehicles served in the Army during the Korean War. Retired from active service in 1959 after being replaced by M4A3E8, and