After more digging, I found articles describing problems with the early G-Sight laser rounds. Maybe they were addressed in the newer version.
If you decide to go with G-Sight Laser, be sure you get GEN 2. (Yes, Gen1 had bad reviews from users).
Mine worked great, no issues at all (just died after few months with nice hole at the rubber end, but that's how all lasers end up).
Because I didn't want to spend a lot of money for something I'd be using for few months, I found less expensive "PinkRhino" which looked and worked exactly like G-Sight.