Best lens for R2 helmet mount

If you used 1" square al (achesalot style), the Ledil CRS series fit perfectly into the housing. The CRS-SS or CRS-M would be good choices with the SS being the more spotty of the two. I've used a combination of the two in an R2 triple and really like the pattern. If you're in the US, Digi-key stocks them and shipping is fast and cheap.

http://www.ledil.com/datasheets/DataSheet_CRS.pdf

I can point you to some beamshots if interested.

Thanks DSCJ, just what I was looking for. I went to Digikey but was confused w/ their one from column A, one from Column B, etc, page. I did use the 1" square so this should be a snap. Thanks.