Right now I plan on using the free C-More once it comes in. I had a couple of EOTECHs that I used on my Colt ARs but stupidly sold both of them. All I presently have is a little cheap BSA red dot that I use on my Beretta CX4 (good enough for the range).
I'll have to check out what the forum has to say concerning optics. I shoot at an indoor range and max is 25yds so a good optic is really not an issue at that range. When it's cooler I'd like to go to an outdoor range and shoot at something farther away (and I'll probably miss the target) since outdoors will be a big shock for me.
Right now I'm trying to ward off the "buy a duplicate of each gun" attack!!!! Haven't even shot my FNs and I'm already in love with them.
What do you use????