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53-OR-281U
The 53-OR-281U (53-ОР-281У) is a high explosive incendiary tracer (HEI-T) projectile. The 53-OR-281U projectile is normally found marked up with its short form designation of OR-281U (ОР-281У), and not its full GAU (later GRAU) index code The 53-OR-281U projectile is part of the 53-UOR-281U (53-ОБР-281У) round, which is normally shortened to UOR-281U (УОР-281У). The round also includes the 54-Zh-281 (54-Ж-281) charge system (case, charge an...
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