Here's what I think:

Top one is an East Germanicon AK47. The photo is on the dark side but it looks to have black grips and a bright blue/black finish. If the frog strap is a gray cotton or nylon material that will confirm my guess. Second one down is the Swedishicon Modeil 1896 as previously stated. Third is an Iranian Model 98/22. or at least I believe the scabbard is. Note the wire loop on the face of the scabbard in place of the frog stud. The Iranian bayonet will have a crown and Farsi numerals on the end of the pommel. The bottom bayonet is a Yugoslavian Model 1948.