Thanks yall. And When i said military guns i meant anything Vietnam and earlier
There were some Mosin Nagant rifles used in Vietnam, and there have also been some captured Chi-Com SKS rifles around. An authenticated example of either would certainly be collectible, but again, it may exceed what you mean by reasonably priced.
Possibly some more insight as to what you intend to do, and what your price range is may get you more detailed ideas.