A no cost simple mod you can do if you have a beam with artifacts is to take your glass lens and sand down 1 of the sides with medium grit sandpaper. Not sure if it will work with an AR lens or a big lens. I did it with a Convoy S2+. Just press the lens down hard on the sandpaper and move it back and forth in 1 direction, rotate the lens, sand some more, and continue until the etching (i.e. scratches) is consistent across the lens.
If it doesn’t work the first time, you can start over again on the same side. It took me 4-5 attempts until it turned out to my satisfaction. And I was shocked as to how well it smoothed out the beam. The LED had a crack in the dome which caused a very annoying artifact. This mod smoothed everything out perfectly.
And as a bonus, the lens is still glass so it remains durable.
