Laserlyte kryptonyte - Laserlyte Kryptonyte Laser Bore Sighting System LBS-HULK-140

Worked exactly as I hoped. Checked repeatability by re-inserting and viewing through scope repeatedly (1" at 30 yards or so). Key is makig sure you adjust it to be snug. Tried in 35, 30-30, 45, 12 ga - this is what I like most about the product, entire camp could sanity check any gun after travelling and before heading out into the woods... Green laser is much more visible than the red.
Pros: Universal, adequate repeatability, bright laser
Cons: Bit more than I wanted to spend, but no regrets

This review was written in the old system and had content requirements that are different than reviews written today.