Patent ID: 8453367
Filing Date: 2013-06-04
Classification: F41A

Abstract:
1. A maintenance kit incorporated into operable components of a sub caliber action device installable within an upper receiver of a semi-automatic rifle for facilitating disassembly, maintenance and reassembly of a bolt and a forward chamber adaptor with a receiver plate, comprising: at least one gauge dimension defined in a barrel of the forward chamber adaptor for establishing a correct spacing between lengthwise extending and interior notch defining arms associated with the receiver plate; a modified guide rod for facilitating disassembly of either of a firing pin associated with the bolt or an extractor pin associated with the bolt, said guide rod also for assisting in cleaning of the chamber adaptor interior prior to reassembly of the bolt and chamber adaptor; said guide rod comprising a distal cylindrical end portion defining a first end of the guide rod and having a first diameter to facilitate disassembly of the firing pin as well as facilitating forced dislodgement of the extractor pin for subsequent removal of an extractor mounted to the bolt, an intermediate cylindrical rod portion having a second diameter larger than the first diameter, and an annular enlarged collar extending radially outward from the cylindrical rod portion at a second end of the guide rod opposite the first end which, upon inserting the guide rod in a lengthwise fashion through a defined aperture in the base of the receiver plate, anchors the guide rod to the receiver plate; and a slot extending through the intermediate cylindrical rod portion for receiving a wipe fabric to facilitate cleaning of the chamber adaptor interior.