Well not to throw a wrench into it but when I got my KP1 GM 50 cal barrel brand new from Knight it was still packed with metal and thickened oil residue. Took me a while to clean it up but she came clean. It does have just a slight tight spot at the base but the rest of the barrel is sized the same. I would dare to assume that it was a cut rifling barrel for this to happen. Left a message with krwarranty about it today.
I thought most larger barrels from GM were mainly cut rifling?
