This is a Rock River Arms chrome lined, mid-length 16" 1:9 barrel purchased from Pete in NH, then turned to medium profile and fluted under the handguards by Kurt's Kustom Firearms. "Pre-ban" configuration threaded muzzle and bayonet lug.
Only fired 40 rounds through it. I will also include a delta group, front sight post, detent, and spring, an A2 flash suppressor, and an M4 side sling adapter.
Paid $200 for barrel, $85 + shipping for KKF's magik, and whatever all the other accessories cost me.
Yours for $260 shipped.
YES, I can get pics, but it might take a couple days. (Friday or Saturday most likely). I gotta buy a digital camera at some point. Until then, gotta call a buddy of mine.
Thanks for looking.
* edited to add twist rate