Abstract: A flashlight attachment for a firearm, for illuminating a target in darkness, comprises a lightweight flashlight casing which clips underneath the firearm barrel, and a touch switch for operating same which is connected to circuit leads extending from the casing, the touch switch being releasably secured to the firearm handle by Velcro fasteners so that it may be operated by hand pressure by a user of the firearm without the user having to release his or her grip on the handle. The attachment may be speedily and efficiently attached to a firearm and removed therefrom.