57 mm АЗП С-60武器系统由57毫米自动炮、松（SON）-9雷达（波长10cm）、PUAZ0-6光学测距机、E-18型自动向量瞄准具、RPK-1 Vaza射击指挥仪系统和传动系统组成。具有全天候作战能力。有自动、半自动、手摇对针、手动四种瞄准方式。雷达与指挥仪安装在乌拉尔-375卡车底盘上。
Anti-tank round with sharp penetrator, blunt cap and an aerodynamic cover, with tracer and a delayed-action base fuze.[3] Penetration 96 mm RHA at 1000 m range or 106mm at 500m.[4] UBR-281 and -281U are loaded with the same projectile and differ only by details in case mouth and swage grooves.[3]
Similar to UOR-281; some sources state the shell is the same as in UOR-281 and the round differs from it only in details of the case mouth and swage grooves (as with the UBR round),[3] while others claim a slightly larger HE filling.[4]
Type 59 AP
AP-T
?
?
?
Chinese anti-tank round presumably similar to UBR-281/281U.
Type 59 HE
HE-T
?
?
?
Chinese fragmentation round for anti-aircraft use, presumably similar to UOR-281/281U.
^Ross, Russell (编). Cambodia, a Country Study. Area Handbook Series Third. Washington, D.C.: Department of the Army, American University. 1987: 313. ISBN 978-0160208386.
