GAS PISTOL M9 HEX CUT BLACK WE (REF500646)

This replica is made by WE and is all metal (and heavy - it looks just as you would imagine it should). Like an M9, the blowback is quite effective thanks to the HEX design (the cut from the top helps reduce weight, improving gas efficiency).
To fill it with gas, remove the magazine and keep it (and the gas bottle) upside down. Align the nozzle with the valve, press and hold for about 10-15 seconds. Then you're good to go - load up your BBs and you're ready for action.
The M9 has a double action trigger, which allows you to fire even when the hammer is down - this makes it a great choice for the sidearm. Just unholster and you are good to go.