Patent ID: 7004425

Claim:
A missile to be fired from a barrel, comprising: a tail having a tail end surface; a tail sleeve attached to said tail; a stop element fixed to said tail sleeve; a movable structural part disposed at said tail; fin assembly wings to be released from a subcaliber launch position to an overcaliber functional position by said movable structural part moving toward said stop element through a given distance, said fin assembly wings having cutouts formed therein; a pressure area disposed between said tail end surface and said movable structural part, a propellant gas entering said pressure area during firing of the missile, for moving said movable structural part away from said tail end surface and against said stop element after firing; bearing shafts supported by said tail sleeve, said fin assembly wings configured as a wrap around tail fin assembly held about said bearing shafts; and said movable structural part being a locking pot having a base with a propellant gas inlet formed therein, said pressure area disposed in front of said base through which said propellant gas inlet passes, said movable structural part further having a pot casing with holding pins extending into said cutouts in said fin assembly wings.