Atakacorp, why would you "not do 14x1 on the 7.62x54r or the 308" ? So does that mean I have to cut new different threads on top of those existing threads ? I wanted to avoid having to cut new threads,that's why I waited to buy these new rifles becasue I was told "these new imports are already threaded from the factory so when the cap is removed, you can easily screw on a Muzzle Brake & or Flash Suppresor," is that not correct? I don't want to do anything that is not 100% safe.