If you buy the cowboy/ cowgirl costume in the store there is a gun that comes with but i don't think you could cause harm to anyone, if that's what you are thinking.
shoot it with your gun
You shoot the bird by the gold mine.
you use either the pea shooter or the spud gun and click on the key. The gun will shoot by itself an the key drops and you take it.
Buy the alien costume. Then put it on and press the space bar to shoot. That is how you shoot the arrow too, when you get it.
you get a wild west outlaw costume it doesn't shoot at people
Buy the alien costume, wear it, and press the spacebar.
you can shoot targets in the shooting contest to get a better gun also you can shoot people when you try to defend the train and when you need to defeat the el mustachio gang.
beat the old gun slinger since he's the hardest after that beat the girl and you win
there's a mini-game that you use the gun for. it's better than using the pea shooter to shoot things.
You have to buy one in the store. it shouldnt be more than 75 credits. it comes with a costume
You have to go to your bag, and click Equip on your potato gun, or Pea shooter, which you get from the Marshal.
You have to shoot the objects above them to scare them out of their hiding places. For instance, shoot the candle to light the flame or shoot the gun to make it shoot or shoot the bag of money above the girl so they fall on her.