Coupled with a good 45-degree offset iron sight set-up; the
legendary Leupold company has had a 2-7x with a very useful and instant acquisition 'turkey plex' reticle. Used mostly on shotguns and cross-bows it went under most AR users radar. The described set-up will give you CQB speed into the area that the 2x becomes desirable and then allows for a 7x precise acquisition on a 4" area at 200M. It is light weight and even with a 1" tube the clarity is excellent
Leupold VX-1 Shotgun Scope 2-7x 33mm Turkey Plex Reticle Matte $219.99
Burris AR-P.E.P.R. 1-Piece Extended Scope Mount Picatinny-Style with Integral Rings Flattop AR-15 Matte $89.99