Abstract: An improved lock system structured to secure a structure closure in a closed position, the lock system including a main housing with a surrounding wall structure, an open interior and opposing outlet ends, and a pair of opposing track members disposed within the open interior of the main housing, and each having a first end and a plurality of teeth along an interior surface thereof. The track members are disposed in spaced, confronting relation from one another such that the teeth on the interior surfaces thereof confront one another. Additionally, disposed between the teeth of the track members is a drive member, including a drive segment having a plurality of drive teeth around a perimeter thereof to engage the teeth on the track members, and at least one actuator segment to facilitate exterior rotation of the drive segment resulting in corresponding lateral movement of the track members towards and away from the opposing outlet ends of the main housing.