$200 - Troy 9 inch MRF Ar15 rail with 5 Knights Armament rail covers
Troy rail, mid-length with laser engraved T-marks. Free float and rock solid enough for mounting optics on the rail. Fairly easy to install, you don't have to remove your front sight. Made for a mid-length rifle and ends just behind the front sight. You can also use on a carbine rifle if you remove the front sight and install a low profile gas block. Adds only 7 ounces to the weight of the rifle!
Will ship for an extra $5.00. Will take paypal.
Also willing to trade for a cheaper free float rail with cash to boot.