Since nobody has mentioned one and you collect Milsurps, how about a Krag-Jorgensen? In U.S. Springfield (.30-40), you can lay hands on one for $500--$1000, in shooting condition.
Want a Holy Grail? The Danes mfd. and issued Krags until 1940, when the Germans marched in. The Germans appropriated them and issued them to what we would call REMF's, but there was a supply problem.
Danish Krags were chambered in 8mm x 58R which, of course, wouldn't work with the German 7.92mm x 57JS round. The Grail part? The Germans managed to get a bunch of Danish Krags chambered for 8mm Mauser.
I'm guessing that more than one of these ended up as USGI bringback, especially when you consider that some National Guard units were still armed with the 30-40 Krags well into the '30s and Color Guards had them chromed and used them, well, maybe they're still using them. It's not like chromed ceremonial rifles wear out. (My point here is that a whole bunch of USGI's knew WHAT a Krag was.)
Not only were they re-chambered in 8mm Mauser, more of them were done in .30-06 and .308 after the war, clear into the '50s. There is one proviso here--don't try this with Great-Grandaddy's Phillipine Insurrection 30-40. European Krags have two locking lugs on the bolt, U.S. Springfields, only one.
Well, there it is--a fairly easy-to-find Milsurp, beautifully machined and ammo availability (.30-40 Krag), and a Holy Grail--8mm Mauser Krag (or .30-06 or .308 if you want something REALLY rare.).
Gook Luck and Good Shooting--
ed
P.S.
Sgt. Schultz of Hogan' Heroes fame carried a Krag. The actual weapon was a U.S. Springfield, but my guess is that it's use was based on prop availability, and was supposed to be the Dane.
ed