Features M1A1 Caliber:75 mm. Length:from the piece, 1.32 m; of the barrel, 1.19 m. Weight:complete, 587.900 kg. Pointing in elevation:— 5° to + 45°. Pointing in azimuth:6°. Initial speed:maximum, 381m/s Maximum range:8,925 m. Projectile weight:6.241 kg. In 1920, American military officials called f