Great tool for basic boresighting - Bushnell Laser Boresighter w/ Arbors

This laser boresighter by Bushnell is exactly what I needed for a basic boresighting. I have an upper with a non-magnetic muzzle brake so my magnetic Sightmark boresighter wouldn't work. I decided to pick this up and give it a try. I actually like it better than the Sightmark Triple Duty. With this, I can place it easily in the barrel to get a much better approximation of the reticle being on target.

I have a wide range of calibers that I used to test the arbors with and I could easily find one that worked with all of the calibers, even 12 gauge.

I rated it 4 stars because the boresight isn't perfectly centered. If you twist it inside the barrel, it spins in about an 8 in circle at 30 feet. It's not perfect but it's enough to get on paper at 25-50 yards.