KillFlash for T1 red dot

thingiverse

I designed this for my buddy, and it perfectly fits an optic that's 28mm wide. You may need to tweak the scale by +/- 1% to get a seamless fit because some optics have a slight cone shape. For optimal results, print with clear PETG or PLA. This will make the lines almost invisible when focusing on the background. If the killflash becomes too large, you can add some tape around the rim to ensure a tight seal and prevent scratches on the optic.