Patent ID: 8156677

Claim:
A firearm comprising: a trigger mechanism housing; a receiver operative to retain the trigger mechanism housing, the receiver having a grip with a rear edge and an outer surface; a removable trigger housing pin operative to mount the trigger mechanism housing to the receiver; and a first attachment configured as a removable backstrap, the first attachment being selectively mountable to the grip such that, when mounted thereto, an effective size of the grip is increased; the first attachment being elongate and having an inner surface, an outer surface, a first end and a second end, the inner surface being oriented to face the outer surface of the grip; the first attachment further having a segment and a first tab, the segment being positioned at the second end and extending from the inner surface, the first tab extending outwardly from a distal end of the segment and toward the first end; the inner surface, the segment and the first tab defining a channel, the channel being sized and shaped to receive the rear edge of the grip to facilitate positioning of the first attachment on the grip.