Thats why less common collection pieces should not be shot...they become expensive paperweights.
While I'm not the biggest fan, SKS is the way to go for a x39 gun that will see tons of ammo down the pipe. They are cheap, they are tough, they are plentiful and parts are available.
I'm a firm believer that Rifles were made to be shot. I shoot everything I own at least once every 2 years. Otherwise I'd just buy dewats or airsoft or something. If it breaks it breaks.