How about an LR308 build, get yourself a beautiful fluted stainless match barrel and good optic to make it look special, whatever floats your boat. Then you can throw some long range lead accurate and semiauto. Plus 308 is easier on the shoulder and not too expensive
What about a 5.45x39 upper and a few spam cans of milsurp ammo? Is it worth it to shoot the corrosive ammo? After setting up at a gun show this weekend, people have me feeling like I need to be stockpiling some ammo and the 5.45x39 is cheap and comes in the spam cans. Got plenty of handgun ammo stockpiled, but no rifle rounds.