A type of medium caliber guns apply gun short-recoil automatic mechanism cycle regularity, and use advanced technique to achieve high fire cycle, high accuracy and light weight.
某中口径舰炮采用炮身短后坐式自动机循环规律，运用先进的技术手段，实现了高射速、高精度和轻型化。
2
Now he chats with his plain clothes rebel comrades next to a gun-mounted pick-up truck, hoisting a Belgian-made FN lightautomatic rifle that's half his height.