Patent ID: 7367150

Claim:
A firearm lock having a right half and a left half for placement over a right side and a left side of a trigger guard of the firearm, comprising: a) a right outer housing and a left outer housing each having an outer surface and an inner surface; b) a right protective plate adjacent to the inner surface of the right outer housing and having a plurality of through holes, c) a left protective plate adjacent to the inner surface of the left outer housing and having a plurality of through holes, each of the through holes being alignable with a corresponding hole through the right protective plate; d) a right interface member adjacent to the right protective plate and having a plurality of through holes, each of the through holes being alignable with a corresponding hole through the right protective plate; e) a left interface member adjacent to the left protective plate and having a plurality of through holes, each of the holes being alignable with a corresponding hole through the left protective plate; f) a plurality of transverse security elements, each security element being retained to either the right outer housing or the left outer housing in a pattern such that when the right and left halves of the lock are assembled the security elements pass through aligned holes in each of the protective plates and the interface members; and g) a transverse locking element, the locking element being activatable to lock together the right half and the left half of the firearm lock; wherein the right half of the lock comprises: the right outer housing, the right protective plate and the right interface member and the left half of the lock comprises the left outer housing, the left protective plate, and the left interface member, and the two halves, when placed over each side of the trigger guard and locked together, cooperate with elements on the firearm to substantially prevent movement of the trigger lock; and wherein features of the trigger lock are selected such that the same lock will, without modification, fit securely on the trigger guards of a plurality of firearm models produced by a single manufacturer, the selected features comprising at least one of: the pattern and number of the plurality of transverse security elements; a location of the transverse locking element; a contour of the right and left interface members; and a profile of the right and left protective plates.