Rem/Age, X-Caliber, reamer or caliber of your choice. Choose a reamer from our list and a barrel blank. We carry mostly, Sendero, MTU, and some #4 tapers, muzzle threaded or not threaded, finished length. You will be given an opportunity to leave instructions at checkout. Custom order blanks are usually a 6-8 week lead time. Please leave specific instructions. Rifle make (rem700), barrel taper, twist, length, threaded or not threaded.