You could sell them to folks like myself...
Who look for "sporterized" guns like 92-98 Krags, WWI-era Mausers, 1903-series Springfields, U.S. M1917 Enfields, and other collectibles, and then find all the parts to restore them back to their original, and increasingly more rare, military configuration. My 1903A4 restoration was unbelievable butchered, the receiver was the only thing worth saving.
Some of the old military rifles are getting so rare that preservation societies are cropping up. I just gave the specifics of my 1898 Krag to a collector's group to help fill in the gaps of serial number ranges and production figures.
I'm beginning to believe the saying, "If you want a sporting rifle, buy a sporting rifle." The work and money that's put into making a quick handling, scoped, Wal-Mart ammo fed hunting rifle, on top of the price of the original military rifle used as the donor gun, could equal the price of a new Remington 710, or a nice used Remington 700 ADL, etc.
Now, in today's military surplus gun arena, not many people are balking at cutting up a Yugo M48 Mauser. Heck, they're cheap enough, why not? But history repeats itself, as witnessed by the "sporterized" military long arms of WWI and WWII, and the great business these days of providing original and reproduction parts to restore them to their original configuration.
Some day (week, year, decade) down the road, that sporterized M48 Yugo could very well catch the eye of somebody looking for an original Yugoslavian 98 Mauser, since their import ended long before. Milsurp rifles arrive here in batches, then they dry up. Remember the $99.00 Chinese SKS, before the Clinton Administration banned them?
Look how fast the No5Mk1 Lee-Enfield Jungle Carbines sold these last two years, after they found a cache of them in Malaysia...
I'm very much guilty of sporterizing old milsurp rifles myself, but only when it was the occasional derelict Mauser Gew98 or Czech VZ-24 receiver laying about here and there, or the gun's barrel was totally rotted out. At that point, it wasn't economically feasible for me to restore it back to full military condition. I still have a Siamese Mauer action in my file cabinet, waiting to be built into a .45-70 sporting rifle.
Granted, there are some purists who take their collectibility criteria to extremes, and others who could really give a rat's a$$ about what they do to their gun. Diversity is the spice of life, ain't it?