Rekeyable lock cylinder

A rekeyable lock cylinder comprising:

• a cylinder body;
• a plug assembly rotatable disposed within the cylinder body comprising:
• a plug body having a longitudinal direction defined thereon, an outside wall, a keyhole formed along the longitudinal direction, a plurality of lower pin holes and a first hole in communication with the outside wall and the keyhole, and further the first hole is located adjacent to the longitudinal direction;
• and
• a plurality of assembled rack components disposed at each of the lower pin holes of the plug body respectively;
• a first movable member having an end disposed at the cylinder body, wherein said first movable member is perpendicular to the longitudinal direction;
• and
• a second movable member disposed in the first hole of the plug body, wherein said second movable member is inclined at an angle to the first movable member when the lock cylinder is locked, the second movable member has a first side contacting against the end of the first movable member in response to a rotation of the plug assembly, and the end of the first movable member protrudes into the first hole of the plug body when the plug assembly turns to a rekeyable position where the first movable member is aligned with the second movable member so as to limit rotation of the plug assembly opposite to the cylinder body.