Bit of black nasty to tape it to your gun, job done. or get the cheaper https://www.amazon.co.uk/ACEBEAM-Flashlight-Flashlights-Included-Batteries/dp/B07BC4QW4C
or get the cheaper
https://www.amazon.co.uk/ACEBEAM-Flashlight-Flashlights-Included-Batteries/dp/B07BC4QW4C