Optics with functional iron sight

[s2gots]

Hey guys, I'm starting my first AR build. Im in the process of aquiring a stag lower. Now, when I start looking for the upper, I plan on also getting reflex sights with flip to side magnifier. With this set up, can iron sights still be used if needed without removing the reflex sight or magnifier? If it is possible, What, in particular do I need to look for in regards to either of the sights or mounting hardware so all the sights are functional?
TIA

[greezy]

when i was in the army i zeroed my m4 using only flip up rear sight (and of course front sight/gasblock thingy) then attatched my aimpoint and adjusted the dot to be inline with my iron sights. once that was done i fliped down my rear sight out if view and went to the range and hit 40 of 40 with the aimpoint(dont worry it didnt count). the rear flipup sight was now a backup in case my battery died on my red dot.

the exact aimpoint i used was the compm2 with no raisers or anything so when my rear sight was flipped up i was still looking through the aimpoint but with the red dot turned off. hope this answers your question

[greezy]

btw this is what your rifle looks like after walking around ramadi for a few hours. just to give you and idea of what it looks like so it looks to me there is no room for a magnifyer on this setup