I've been half-assedly looking for a project (not a "project" like my failed AR24), and I think I've got one. A friend of mine built a badass custom AR pistol, and it has me wanting to do the same. His parts list (and paint job) are a little higher-dollar than my concept, but it's largely the same. I figure I could build this thing for around $1000, and I have enough leftover AR parts in my toolbox that I can just about finish the lower without spending too much.
The upper: Rainier Arms CE10.
The lower: PSA AR15 Lower
The Parts Kit: Spike's Tactical no-trigger/hammer kit. (no pic because screws and pins aren't interesting to look at)
The Buffer: PSA Pistol Buffer Kit
I'm probably going to buy a used EOTech micro from one of my friends to finish it off. I may also put on some Magpul MBUIS sights. Also, here's a pic of my friend's pistol before it got cerakoted. I probably won't cerakote mine, at least not immediately. Provided my wife will agree to let me spend $1000 on a toy.