Means for semi-permanently retaining the magazine of a semi-automatic firearm

Abstract

The invention comprises a device and various optional modifications to the lower receiver of a semiautomatic firearm whereby the firearm is at least semi-permanently rendered incapable of quickly removing and replacing a cartridge magazine. The device comprises a means to mechanically retain the magazine in the lower receiver of the firearm such that special tools and at least several minutes are required to remove and replace the magazine. The optional modifications comprise elimination of certain standard machined features which accept and allow the use of a magazine catch, magazine catch spring and magazine catch button; introduction of a hole or slot through the sidewall of the magazine well to accommodate a magazine retention fitting which holds the magazine in place; and the interruption of the lower portion of a clearance slot in the magazine well to prevent installation of a magazine from the bottom of the receiver. The various embodiments of this invention allow the user or manufacturer to control the time required to remove and replace a magazine over a range of approximately 3-20 minutes and the level of special tooling needed to accomplish the exchange.

Dependencies are inferred from the claim text.