Bartlein Barrel Custom contour Lilja Mk13 mod 7 .30 Cal, 1-10 rate of twist

1.250" x 4" shank, straight taper to .800" @ 26" and continue taper to 28"

30 cal., 5R, 1-10, 28" finish 29" Blank

https://bartleinbarrels.com/contours/