I didn't read all the replies but this is my opinion, run a magnified optic on one. If you are already going to take the pinned muzzle device off for a dead air, why not just do the rest of the upgrades while you have it apart and nullify your FSP issue. I have more AR's than I care to admit but my 3 primary shooters are all run suppressed and are basically this
1. 11.5 with a red dot set up for NVG use
2. 11.5 with just a red dot and light
3. 16 inch with 2.5-10