Hello,
I know it's not a sights problem, but brain problem, but somehow I can't make good groupings with standard M4 sights. I have the rear rings shape problem.
Classic M4 sights consist of two flip-flap rings for shooting the different distances. As far as I'm not planning to use the rifle for 100+ meters distance, the 300m circle has no reason for me.
My queston is:
Are there rear sights that have one ring (for fast, less accurate shooting) and second ring replaced with the partridge sights shape?  ( both for same distance). So you can choose the shape?

Please no scopes, no red-dots.

Someone used to make one for competition shooters, but I think it has been off of the market for a while now.

I don't recall the name of the company that made it.

CSAT(Paul Howe) has one produced by XS sight systems. It's in the Brownells' catalog

Weapons Solutions also has one, again in Brownells'

HTH