ok so i sure this is a stupid question but do all muzzle breaks have to be installed by a gunsmith or are there some that simply just thread on like a silencer that i dont have to have the hole ( yeah i said hole) bored out for the proper caliber?
so i have narrowed it down to the swfa ss 10x or the millett trs-1 they are about the same price but the millett is variable power while the ss is fixed a 10x any thoughts or other suggestions in the 300 to 400 dollar ballpark