Here's my latest, courtesy of supporting dealers and the EE...I just couldn't do without a short AR15. I like my shorties as light and simple as possible...I was originally going to go irons only but thought I'd give the Aimpoint a try. The DD mount is very light (since it offers a 1/3 co-witness there's no need for a QR mount) and with the sight mounted "mid-way" along the rifle it doesn't affect the balance.
Upper: N8 Upper from Arms East with Magpul MOE handguards, Aimpoint H1 in Daniel Defence Mount (and sometimes a Magpul AFG)
Lower: Armalite lower with Stag parts kit and LMT receiver extension, Magpul MOE grip, trigger guard and CTR stock