Well, I have always thought I would get a 9mm AR someday...But I have some much other stuff that needs to be outfitted first, from builds to optics, to a higher capacity reloading set up.  But this deal is insane.  How are the ETS and Magpul mags?  Do the swell leading to tough release?  Anyone have experience with this lower?  Would I need to use a PSA upper, or could I use a side charger?

Thanks!

The deal

That is a good deal.
I have that lower
It's GTG and the ETS and magpul mags(all my genuine glock mags are 40s&w)
Feed well and drop free empty or loaded