I'm the original owner. Built it in 2007. Only a couple of boxes of ammo have been shot through it. Upper-half made by J&T Distributing (Doublestar). Barrel length is 20" and has a Heavy contour with a "6.8 Rem 1-10" marking. Last time I checked it does use the SPEC II chamber dimensions for the hotter loads. Bore & chamber are not chrome-lined. Lower receiver made by Superior Arms with parts from Sarco Inc. I know of Superior Arms's mixed reputation, but other than dimensions being tight I've had no problems with it. Comes with one 5 round PRI magazine & sling. Must have a WA State DL and/or Concealed Carry Permit. Ad will be taken off Dec. 4th. Trades: Quality US-made guns.