plinker

noun

1. A person who shoots at makeshift targets.

   “Game wardens anywhere know about "plinkers" — those gun-toting folks, mostly urban, young, and male, who will shoot at anything that moves. In the deserts, urban centers are growing. Plinkers are legion.”

   “Plinkers, also called gallery shooters, don't need a formal shooting range for their sport. They shoot at things that respond. Many plinkers pick out a can or piece of charcoal to set on a spot with a safe background, then try to knock it down […]”

2. A firearm used to shoot at makeshift targets.

   “[…] the plinking gun should be more of a target arm than a defense or hunting gun, and ideally it should be one stage more sophisticated than the basic $35 to $45 revolver which many think of as a plinker.”

3. One who makes a plinking sound.

   “The consumption rate of piano plinkers was terrific.”