I just installed a Lasermax laser in my Glock 26. Nothing to it for a guy who is all thumbs. Pretty neat.
Replaced factory recoil spring, recoil guide rod and take down lever and spring.
I press on the take down lever on either side and laser goes on. Press on other side and it goes off. Didn't have to do any adjustments. It was sighted in already.
Has anyone had any experience with longevity of these things? They claim to be very durable.