Spikes Tactical 16" Mid length gas system.. $809 bucks. I also got the tactical case for 50, two extra 30 rd. mags, and a little range bag. It also comes with a black hard plastic lockable case too. Over all, I'm damn excited to get this thing. M4 feed ramps (if I ever need em), chrome everything, detachable A2 carry handle, and I'm excited for the mid length system too. Takes about 2-4 weeks for delivery, but I'll be on vacation till middle of Jan anyway, so it's no big deal! The ROTC guys will be jealous I do have one question for everyone... All the pictures I've seen show that the gun has a 3 selector position.. safe, single, and full auto. I wonder how the normal ones come shipped?