I want to rebarrel an upper to a 6X45. I have a lower, my question is should I buy a complete upper and pull the barrel or buy upper parts? I have a shelf full of 6MM barrels that have been retired from benchrest, so if I buy an upper, I would have everything but a different gas block and barrel adapter to be in business? I can do the machining.
Palmetto State Armory has some good deals on uppers.