The freak Jr barrel is a great and inexpensive top of the line barrel option. The Freak Jr or Freak Jr kit will get you the versatility of a barrel kit without breaking the bank. The Freak Jr is barrel that is put together by Smart Parts, but does not have the same options as the Freak Barrel. The Freak Jr comes with the barrel back that you choose for your gun, a 14 inch dust black front, and a pre determined insert based on the version of the barrel that you buy. The Autococker version of the barrel comes with a .689 insert. All other versions of the Freak Jr come with a standard .693 insert. Additional inserts are available for purchase separate.