Hey guys, I just received my new LaserLyte rear sight laser for my Glock 19. I was somewhat hesitant to buy it because of the mixed reviews I have read, but I figured I'd give it a shot since I really like the idea. I use a Hogue grip on my G19 so I didn't want a CT grip laser, and the Lasermax guide rod is 3x more expensive. My carry holster doesn't allow for rail or trigger guard mounted lasers. So with that out of the way, on to the review. After all the issues I had read about, I made it a point to test for all of them. Issues I had read about: - Battery cap comes loose - Turns on/off after first shot - Switches from pulse to constant on after first shot - Elevation/windage won't adjust - Loses zero - Poor battery life So you could say I took a gamble getting this thing at all, but I read that their customer service was great, so I figured for $94 from CTD, why not? So today my laser arrived. Again this is the newer version, the RTB-GL, not the older RL-1. This one has a black on/off switch instead of grey, and does NOT have the small light on the back of the sight to show you what mode it's in (most people complained about this), although the spot for it is still there. So, as soon as I took the thing out of the package, I checked to see how loose the battery cap was. It was easy to turn, so I cranked it nice and tight with a pair of pliers. The battery cap has an O-ring to seal from water, so you want this to be nice and compressed for a good seal. If not, I don't doubt that it could come loose. Then I hit the button to turn it on and make sure it worked, in both constant on and pulse. Then I threw it on the ground a couple times in different modes to see if the shock made it do anything funky. No problems. So then I tapped out my stock rear sight and tapped in the LaserLyte, and locked down the set screw. Next I pulled out the smaller hex wrench to adjust the laser. At first, I thought I had run into the "laser won't adjust" problem. The laser comes stock aimed very left and down. So my logic said if I want the laser to move up and right, I should back out the little set screws, taking pressure off the diode and allowing it to move to where I wanted, right? Wrong! It probably says this in a manual that I (and I bet other people who had this "problem" didn't read) but to adjust the laser right/up, you turn the screws to the right, OPPOSITE of most scopes adjustments. So after feeling like a dummy, I had the laser adjusted. Next was a trip to the range to test out the laser as well as my new tritium front sight. I shot 150 rounds. Around 100 with the laser off, and 50 or so with it on. No random mode switches, no random turn ons/offs. After 10 mags without ever touching the battery cap, it was still just as tight as I had left it. It didn't lose zero while I was shooting, but it's only the first day, so that remains to be seen. The laser was bright enough to see down at the 25 yard mark on the well lit indoor range. So for now, I'm very happy with my new LaserLyte. Let's recap my experiences with the known issues: - Battery cap comes loose - not if you spend 3.5 seconds to tighten it enough to fully compress the O-ring - Turns on/off after first shot - nope - Switches from pulse to constant on after first shot - nope - Elevation/windage won't adjust - yes, they will, just not how you're used to - Loses zero - not so far (and if it does, I'm sure a drop of Loctite on the set screws would fix that) - Poor battery life - haven't used enough to test so far So in conclusion, I'm happy with it. I'll keep this updated if anything gets screwy with it. And for those of you who thought that was way too long, here's some pictures Wanna kill these ads? We can help!