AR Diopter sights?

[Forrest84]

Anybody know who has these around?
I found a couple sources that may have the lower 416 style in stock but I can’t find any of the Tall versions like centurion arms did a couple runs of.

 

[BAMCIS]

What rifle length?
POF has a front sight,,uses an A2 front post
KAC rear,,200-600