Compact, lightweight, well designed & looks good, easy to zero & operate - Streamlight TLR-8A LED Weapon Light and Laser

Hands down the best light-laser combo. Compact and lightweight. Easy to install, easy to zero. It holds zero just fine, so don't be tempted to overtighten the screw, just follow the directions. Green laser is super bright, no problem picking it up. The laser improved my marksmanship by giving me clear feedback on what my trigger pull was doing to my point of aim -- things you don't perceive even with red dots. I have had no trouble cleaning the front window, just wipe with a dry patch as part of normal cleaning. Your experience if you shoot cast/lead may be different, I shoot jacketed bullets but some have exposed lead base -- no problem.