troy mrf-cx or mi 12" 2 piece rifle rail

[elia.jon1]

i'm looking for either a troy mrf-cx, the 12" front sight post model, or a 12" mi rifle 2 piece. i n eed something that installs on the factory barrel nut, if someone has a 12" omega i'd be interested in that also

let me know if you have anything that needs to go, it can be painted it doesn't have to be n.i.b.

thanks
jon