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53-O-271
The 53-O-271 (53-О-271) is a Russian World War Two (WW2) era 57 mm high explosive fragmentation (HE-frag) projectile. The 53-O-271 is normally seen marked up with its short form designation of O-271 (О-271), and not its full GAU (later GRAU) index code. The 53-O-271 forms part of the 53-UO-271 (53-УО-271) round, which is fired by weapons, such as: the Ch-26 (Ч-26) towed anti-tank (AT) gun; the Ch-51/Ch-51M (Ч-51/ЧЧ-51М) guns of the ASU-57 (...
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