This is by far the easiest laser to use. Out of the box, I had it installed in under 1.5 minutes and was shooting 2" groups at 20 yards with a Taurus PT92AF 9mm. With open sites, the best grouping I could do was 12" at 20 yards. This laser eliminates the guesswork of where the shot is.
This review was written in the old system and had content requirements that are different than reviews written today.