ash-12.7
The ASh-12.7 (АШ-12.7, Автомат штурмовой 12.7мм) is a Russian bullpup battle rifle developed by TsKIB SOO, introduced in 2011 and chambered in proprietary 12.7×55mm STs-130 straight-walled cartridge. Also known as ShAK-12 (ШАК-12).
The weapon features a stamped metal receiver, a long reciprocating charging handle, arched magazine housing, a carry handle on top or Picatinny rail for optical sight, and often equipped with a suppressor.