Model 24/47 is an earlier version. They tend to be all milled, triggerguard and follower wise. The Model 48/48A is pretty much the same but you will find it with stamped floorplates, triggerguard, and followers, and other stamped parts. As mentioned before, 24/47 had a straight bolt, Yugo 48 have bent down bolts. All parts are interchangeable between the two models. Intermediate length (pretty much same length as a small ring mauser. Actually, a 93 mauser trigger guard will have the same screw mount distance) but is built with a large receiver ring, with bolt guide, full gas shroud, and even has an extra safety item in the recessed extractor cut on the barrel. These were all chambered originally for the 8mm x 57 Mauser.
I have One 24/47 unconverted, a nice little shooter in 8x57, the other I have converted to a sweet .257 Roberts sporter.