I was going to suggest J&G but NOT THE NAGANT ! In order to unload it, (If you use the proper ammo which is expensive ) you need a dowel and a hammer. It will shoot another caliber (.32 I THINK, not sure off the top of my head ) but it is not very powerful. Bear in mind that even with the full power loads it was designed for it was never good for any thing but target shooting (accurate as heck ) and shooting dissidents in the head from close range.
If you want a Target pistol get the Nagant, For defense get pretty much anything else.