Many of these are derivatives of the AK, some are custom builds ;)
Some commercial "sporterized" AKs:
Romanian PSL Images from the Dragunov website, Gunco, various other places
(note-some are very large pics!)
So-called "paratrooper" model with cut-down barrels. Presumably cut down to remove un-serviceable sections of the original barrels. Range reports indicate good accuracy nonetheless.