Beretta303,

I use the Anschutz 9775, the Centra 3.0 & 1.8 Basic, and the 510 Gehmann Basic on my Gehmann Compact 590 rear-sighted rifles.

I suspect that at least some of these irises are made by the same chappies

I have found all of these irises to be quite excellent, and use two (2) of the rifles (recoiling springers) for field use, matched with the Centra High End 3mm post element.

I have felt no need to have any colour filters or polarisers in the rear iris - they can be added to the anti-tube in the rear-sight if needed, and this results in a much simpler and less complex iris.

It should be noted that these irises have taken the battering from 11 ft.lb rifles in their stride

+1 on the Centra High End foresight elements - for me, they are excellent performers ( I prefer the 4.6 / 1.2 elements for 10m shooting ).

Have fun & a good Sunday

Best regards

Russ