Pretty sure this gun is deadly. There is probably a way to fire it, perhaps with a string tied between a door knob and the trigger or something. Might be a good idea to test a few ideas first when the gun is not loaded! Though this is susceptible to errors. Getting a gun with a shorter barrel / shortening the barrel yourself could be an option, too as people have already pointed out.
Man, I'm really jealous of Americans and others who can just walk into a store and buy a gun. Shooting myself would be my preferable method to kill myself and if I had a gun I might be long gone already.