Looking at a reflex sight. Dot or Dot and circle? Red or green?

[Gaujo]

Dot and circle
https://www.holosun.com/index/produc...il/id/123.html

Dot
https://holosun.com/index/product/detail/id/121.html

And Red or green? I've never seen a green dot, is there some benefit?

[sniperdoc]

I prefer Red Dot; The Green can get lost in foliage (especially Spring and Summer) and the "clutter" of circles, etc on a screen/lens actually causes me to be slower and a bit less accurate.

[b_saan]

If there's a choice, I prefer green, not that red is bad but I pick up green a little faster.

[LotsaTiques]

I prefer the red & green dot option. The green dot is easier to find in sunlight (shows up better). Having the choice I'd get one that has the red/green option. I shoot a lot of steel with a SA pistol and PCC and I don't like the circle dot at all. So I guess depending on what you're going to use it for the circle dot might be fine. For fast acquisition 6 moa red/green I'd recommend.

David

[Jmacken37]

Red dot and circle for me. The Holosuns seem to give me less trouble with my astigmatism.

[kanewtervalve]

Red dot and circle for me. The Holosuns seem to give me less trouble with my astigmatism.

Same

[chili17]

I'm a straight up, what is now probably old school, plain ass, 2-4moa red dot.

[ericthered]

Me personally i like dots. I do have a circle dot (cheap garbage) on my shotgun that i like very very much. Kinda a "death zone" for that application. I find the reticle faster. I shoot gophers alongside of my country road with it. Highly effective.
What are you putting this on?

[Gaujo]

Canik SFX tp9 / a Browning recoil mechanism pistol

These are a circle with a dot in the middle vs just the dot

[Jmacken37]

"donut of death"

[DINK]

The nice part of the 507K is that you can choose between dot, dot and circle or just circle. Experiment and see what works for you.