Hey all, I just finished up my review of the TBLW (Torch Back up Light) from Mission First Tactical. -Specs- • Power button has simple on/off function. (Hold for one second for momentary.) • Set screw for Picatinny Rail mounting (Requires picatinny rail, NOT keymod or MLOK friendly.) • IPX7 Waterproof Rating • Battery door opens with quarter-turn • Requires 1 CR2016 battery (included) • White/White LED • 20lm output • 12 hour burn time. • Manufactured in the USA for MFT by Princeton Tec. -Likes- • Price, MSRP is 49.44 • Size/weight, Super small footprint makes it all but disappear on your rifle • Brightness, 20lm isnt much but it will suffice for a home defense situation and its great as a back up or low light patrol option • Momentary option for short burst -Dislikes- • Not keymod/Mlok compatible -Overall- 5/5 Stars. A solid little product for a great price. Review video here: Cheers.