I want a boresighter for use on my ARs and AKs that have muzzle brakes. I want to be able to sight red dot and iron sight before going to the range. What is a good one you have used? A laser that is actually centered? My previous experience with a Bushnell arbor tip laser was terrible, You could see that the laser was not even physically centered in the tip of the device- and the point moved to a different spot each time you put it in.