Nail Gun Massacre

Nail Gun Massacre is a 1985 horror film written and directed by Terry Lofton, and codirected by Bill Leslie. It follows a young doctor and sheriff as they try to find a killer wearing a motorcycle helmet who is killing locals with a nail gun.

Nearly five months later, a person in camouflage clothing and black motorcycle helmet kills one of the rapists with a nail gun. Seeing his body, his wife flees outside into the woods. The killer then quietly leaves. After another month passes, Mark, another rapist, cuts some wood with his friend Brad. The killer now drives a goldpainted hearse. As Brad urinates, the killer shoots him in the crotch and stomach. As Mark revs up the chainsaw, the killer sneaks up behind him shoots him in the back of the neck. Mark falls and the chainsaw severs his hand.When Doc, the town doctor and coroner, arrives at the scene of the crime, the sheriff shows him the bodies of Mark and Brad. The doctor mentions that now three bodies have been found on Old Lady Baileys property. The sheriff asks the wife of the first murder victim if her husband was a carpenter before he died, and he leaves to call the meat wagon. ........

Source: Wikipedia