This mounting bracket allows you to mount a cheap, generic 5V LED laser diode on and nerf gun or similar toy with a tactical rail. This was drawn up based on dimensions from my Nerf Stampede. This has been tested with a nerf stampede and works well, and is designed with wide enough tolerances that anyone's printer should be able to handle it. REQUIRES 1 LASER DIODE (5V, 5mW, 6mm diameter. These are readily available on ebay for as little as 70 cents each) The simple mount allows you to slot in the laser diode and mount it so that it is firm enough to not move around if you shake the gun, but has enough give that you can wiggle it into place to align the laser accurately. I haven't drawn up any battery mounting brackets or switch housings, because I thought everyone would have their own ideas for how the laser should be powered/controlled anyway (mine is to get a separate 5V power supply from the robot it's mounted on).Print one laser mount (minor bridging in this print, no support required) Slide laser diode into mount, so that the wires protrude through the rear holes. Slide the assembly onto your nerf gun