I can vouch for the Atactical. Have mine mounted on a shot gun . I saw a video where he threw it down hard many times and it kept working. This company is related to Thrunite so it has a good pedigree . The new name is Wowtac.

https://www.amazon.com/Flashlight-Pocket-Sized-Resistant-Outdoors-WOWTAC/dp/B07D9K884P/ref=sr_1_3?ie=UTF8&qid=1541113653&sr=8-3&keywords=atactical+a1s+led+flashlight