If you’re hoping to spend $20 and get a Surefire weapon light, you’re sadly delusional… you need to get back in touch with reality and understand that you get what you pay for. This light is functional, and has stood up to the recoil of a few different firearms. I tried it on my XD9 sub-compact, Walther P22, Rock Island 1911 (in 45acp), AR-9 pistol, & even my VR80 12 gauge. The light isn’t very heavy as it’s all plastic, but probably wouldn’t stand up to a ton of abuse for the same reason. The “150 lumen” claim is hard to truly quantify because (believe it or not) the lumen measurement isn’t standardized. Basically, it’s bright enough to help in the middle of the night without totally blinding yourself with light backsplash, but don’t expect to be able to put it on a rifle for night hunting.
Bottom line, I left it on my nightstand pistol since it’ll spend most of the time comfortably doing nothing and if I need it in the middle of the night it’s definitely better than nothing.