Thanks for bringing it up mrfudd! I was going to mention the post and triangle too. I have the green triangle in a 3-9 x 40 Accupoint.

I didn't think much of it till I completely shaded the fiber optics and it became a very sharp black image perfect for paper. While javelina hunting a coyote ran out of some brush at 140 yds. The huge open field around the illuminated triangle was perfect for that right to left running shot, nailed him!

While I have a duplex 3-9 Accupoint and I like it, I the next accupoint I get will have another post and triangle.