Are there any paint or decal options to reproduce the anti-reflective lens coating on Abrams tanks? Looking for something other than the AFV Club stickers.

I prefer to use paint. I start with a coat of black. Next I add two coats of clear red. Once dry, I use two-three coats of clear gloss. This gives them depth and reflects the colors differently from different angles, just like the real thing.

So, if you take apart the light bar in an optical scanner, you'll have perfect optical glass for several vehicles worth of periscopes. Almost all good printers/scanners have these optical bars, which are about 8 inches long. Over the past 15 years or so, I've gotten rid of at least three printers, I always take them apart and save the glass for work surfaces, cabeling for "cables" and other items that might come in handy. The optical glass light bars can be cut carefully with a Dremel cut of wheel to the right length. You do need to be careful not to shatter the glass, and wear eye protection while cutting. Harder than decals, paint or the AFV club stickers, but it sure looks like the real thing.
VR, Russ