The Uzi is a very nicely executed Belgian Fabrique Nationale example with Congolese Army markings from a 1970 contract production run. Shades of "The Wild Geese"! Israel sold full Uzi production tooling to Fabrique Nationale and allowed the Belgians to manufacture under license. Then in the 1980s the Belgians sold the tooling to Croatia, who manufactured identical guns marked "ERO Uzi", with ERO presumably being the Croat company name or initials. I know this first-hand, as we confiscated many crates of brand new ERO Uzi's still in the grease during my tour in Bosnia during the first half of 1997.
Yes, that is a Daewoo South Korean Service Rifle. A little-known but quite excellent long-stroke (AK-esque) piston-driven, hybrid AR design.