Are most good, or some significantly better?
This particular carbine has a Holosun 510 green dot, and If I'm following this correctly,
I'd like absolute co-witness...flip up. The Holosun is not on any type of add on riser,
Not looking for a peep or ghost ring sight. (I think), but that's what most appear to be.
So, absolute co-witness, flip up, and low enough so when down doesn't interfere with the Holosun.