Patent ID: 8418390

Claim:
A retrofit magazine well for a shotgun having a receiver location, the retrofit magazine well comprising: a. a magazine well body comprising i. an exterior surface, ii. an interior surface configured to removably receive a shotgun shell box magazine; iii. an upper surface configured to engage a lowermost surface of the receiver location of the shotgun; iv. the upper surface comprising a plurality of surfaces defining voids configured to receive fasteners therethrough which engage aligned threaded surfaces within the shotgun adjacent the receiver location of the shotgun; b. a pivoting release lever comprising i. a user engagement end; ii. a pivot pin connecting the release lever to the magazine well body; and iii. a magazine engagement end wherein the pivot pin is positioned between the user engagement end and the magazine engagement end, the magazine engagement end operatively configured to release or retain the box magazine within the interior surface of the magazine well body.