Take Off's from my "source gun" for sale: AR collapsible butt stock($10), 12 inch free float hand guard with rail on top,, includes barrel nut ($30), ergo grip ($10)

Edited to add:

Anderson Rifles .308 Knight Stalker Flash hider - $15



Anderson Rifles 6.83" free float tube with barrel nut, top rail as shown, short bottom rail not included- $30




All prices plus actual flat rail mail or cheapest postage. Buy it all and shipping is free.