pump-action

The pump action on a shotgun is a very distinctive sound.

Some air guns don't have any sort of pump action.

It had a pump action and a little bucket that hung suspended along the tube.

From behind him came the metalic snick-snack of someone working a pump action.

Laura's heart skipped a beat as she heard the pump action of the shotgun.

It is notable due to its unusual forward pump action.

This bridge is manually swung by a hydraulic pump action.

The Spas-12, for example, can fire in semi-automatic mode or it can use a pump action.

There are two common types: the pump action and the semi-automatic.

The pump action is easy to use and reliable.