28" Bartlein 7.5 twist 1.25 Straight contour 6 BR barrel threaded and chambered to fit Impact actions.  Finish is stainless.  Muzzle is threaded 5/8-24.  1.25" diameter at muzzle.  These are Bartlein cut rifled stainless blanks chambered with the .135 reamer.   Weight is 8.9#.