I didn't mention the adjustment features but it's real easy to adjust this one because the adjustment screws are at the end of the tube...has one screw (hex tool furnished) for up/down and one screw for left/right. The pressure switch mounts anywhere you want it to (for me it was on the fore stock) and it works very good.
The only limitations to these lasers is they wont work when it's really cold. A buddy came over a couple of weeks ago and I was anxious to show it to him and let him shoot it, so when we walked out side it wouldn't work...it dawned on me that the instructions said it would work below a certain temp (can't remember..but it has to be pretty cold). We took it inside for a few minutes and put it by a small electric heater for about 3 min and then it worked great when we went back out. Trust me...it makes shooting a lot more fun. If any of you guys get one...post it here....Dave