Patent ID: 8250988

Claim:
A sub-caliber projectile for a dart projectile, having a drag-stabilizing, conical fin assembly provided with a truncated-conical recess, wherein the sub-caliber projectile comprises: (a) a segmented, essentially hollow-cylindrical guide sabot; and (b) a driving element connected to the guide sabot at a rear portion of the sub-caliber projectile; wherein the driving element is a flat, annular metal disk having first and second flat, parallel major surfaces that both extend transversely with respect to a longitudinal axis of the guide sabot; wherein the disk is mounted at an edge of the sub-caliber projectile in a recess, wherein the recess is an annular groove formed in an inner wall of the guide sabot; wherein the disk has a central aperture hole extending between the first and second flat, parallel major surfaces; and wherein the diameter of the central aperture hole is as large as possible but is less than a maximum diameter of the truncated-conical recess formed in the fin assembly.