This is a sight for your Nerf gun which can be used standalone or as a holder for a cheap
flashlight/laserpointer combination from china:
https://www.ebay.de/itm/2in1-Portable-Aluminum-Alloy-7-LED-Red-Laser-Pointer-Flashlight-Torch-Light-Lamp/282707127548?hash=item41d2a86cfc:g:CiUAAOSwb69ZxOAS