Patent ID: 7293385

Claim:
A trigger group module for a firearm, the firearm including a receiver that defines a trigger group receiving area between a first receiver side wall and a second receiver side wall, the trigger group module including: (a) a module housing adapted to be inserted to an operating position in the trigger group receiving area, the module housing having a lower extremity that is located above a lowermost edge of the first receiver side wall and a lowermost edge of the second receiver side wall when the module housing is in the operating position; (b) a number of trigger group components mounted within the module housing; (c) a first pin receiver positioned in the module housing so as to align with first pin receptacle openings of the firearm when the module housing is in the operating position, the first pin receptacle openings defining pin support surfaces formed in the first receiver side wall and the second receiver side wall; and (d) a first module pin mounted in the first pin receiver on which one of the trigger group components is supported in the module housing, the first module pin including an opening that aligns with the first pin receptacle openings of the firearm when the module housing is in the operating position.