That's a nice find, I had one about twenty years ago and regret selling it. It was very accurate. A pain to handload for, the brass was always marked badly from the fluted chamber and the necks were always bent from the violent but very reliable ejection, make shure nobody is next to you at the range when you fire this gun because the empties are flung over great distances. The only complaint I had about the gun was it's weight, besides that the gun is an excellent design in my opinion and has a great reputation as a battle rifle in it's G3 wardrobe. The features are too many to list but a short list is: Poligonal rifled barrel, delayed roller locked mechanism with NO gas system, removable dust cover for easy cleaning, excellent removable scope mount system, excellent peep sights and good old German Craftmanship.
Good Luck
bigbull