3.9 WARNING!

Smaller shotshells (such as 20-gauge shells), if mistakenly fed into a 12-gauge gun, will slip past the chamber and lodge in the barrel, causing serious personal injury or gun damage if a 12-gauge shell is fired in the gun. Some rifle and handgun ammunition also may fit into the wrong gun, creating a dangerous situation. The caliber or gauge stamped on the end of the shell must match that stamped on the gun barrel. Some are not stamped. Be sure the right ammunition is used in your gun.