That's a Spanish gun, known as a Ruby. The name is supposed to make people think it is made by Fabrique National d'Armes de Guerre. FN is a world famous Belgian gun maker, so by using a similar name people would be fooled into thinking, "Oh, cool. FN pistol for only 50 bucks. Gun seller don't know what he's got, I better buy it now before he realizes how underpriced it is."
A discussion about a very similar gun, a few months ago.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.