Hey guys, been lurking for a few days and decided to join up.
I have a 11707 M4. I've put the collapsible stock, geissele hammer, and disconnector & trigger from somewhere that escapes me at the moment. What matters is that its 922r compliant. I've put the Mesa Tactical 6 shell side saddle on it, and am awaiting some ebay sale funds to order a carriercomp mag tube.
I'll post some pictures of 'er and the rest of the family later tonight when I get home. I hope to learn some good stuff and contribute just as much.
Cheers!