first up my 14.5 Daniel defense government profile barrel with a pinned surefire socom brake,. these were mounted to an upper but never fired. you will need to purchase a mid length gas tube. if you decide to use a different rail it must be able to mount to a milspec barrel nut which is already on the barrel.
next is a great condition troy vtac alpha 13 rail with removable rail sections also mounted but never used 125.00 shipped
If you want both i will take 285.00 shipped. I have more invested in the barrel alone. Gas block is pinned as well.