What you need is carbine length AR that has a telescoping stock with a Daniel Defense quad rail on which you would have to mount a fore grip, surefire weapons light, Lasermax green laser (you can see those better you know) and perhaps an Aimpoint mounted off to he side at a 45 degree angle. Make sure you take a flat top AR with an ACOG so you can reach out and hit those targets that you cant get to with your red dot or flip up Midwest Industries iron sights. You better also make sure that you have a LaRue quick detach mount on that ACOG so that you can get it off quickly if it becomes damaged or if you want to mount another optic such as an EOTech which I highly recommend you bring along. For ammo, I would say 3 or 4 beta C-mags should work to carry on your person.
Oh, I almost forgot that your quad rails might get snagged on something so some Magpul rail covers might be in order.
You can never be too tactical in such situations.
Or maybe I have been spending too much time at ar15.com…..
Sorry... I couldn't help but a smartash