As New Daniel Defense Omega Rail 12.0 for AR. It was put on my BCM rifle, put in the safe, and removed a few days ago.
This is a free float rail for a rifle length AR. It is two-piece so you do not need to remove your FSB or use a proprietary barrel nut. Takes 10 minutes to install. Below are some pics. Here is the link for it. This rail sells for $290 plus shipping. I will sell for $200 shipped.
I am located in Exeter, NH.
I don't post here that much, but I am user ChrisLunker on GunBroker and eBay and have lots of feedback, all good.