Trigger guard roll pin tool
AssigneeThe United States of America as represented by the Secretary of the Army
InventorThomas W. Saur
Life of this patent
Estimating the term…
Abstract
This trigger guard roll pin tool makes it possible to safely and quickly install or remove the trigger guard roll pin on a conventional M16/M4 family weapon. In the disassembly or reassembly of the trigger guard on such weapons the handling of the trigger guard roll pin element is often a manually challenging and painstaking activity that can result in damage to the weapon if done incorrectly. This disclosed tool handily is an assist in such activities. The trigger guard roll pin tool makes it possible to remove and install the trigger guard roll pin without risking breakage of the roll pin flanges on the lower receiver.
Claims9
A trigger guard roll pin tool (100) for use during removal and installation of a trigger guard roll pin (14) on a firearm by a user (U) using a hammer (42) and a punch (40),
- the firearm having a lower receiver (10) that includes
- a trigger guard (12) having a roll pin through hole,
- a left trigger guard retention flange (20L) having a left roll pin hole (22L),
- a right trigger guard retention flange (20R) having a right roll pin hole (22R), and
- a pistol grip retention flange (16) having a threaded grip screw hole (30);
- a grip retention screw (32), wherein the threaded grip screw hole is configured to threadably receive the grip retention screw (32);
- and
- a selector (34) that is installed in the lower receiver (10) and extends a selector distance to the left of the left outer surface of the lower receiver (10);
- wherein
- the left trigger guard retention flange is inwardly offset from the outer left surface of the lower receiver by a tang offset distance, and extends forward of the front edge of the pistol grip retention flange by a forward extension length, and the right trigger guard retention flange is inwardly offset from the outer right surface of the lower receiver by the tang offset distance, and extends forward of the front edge of the pistol grip retention flange by the forward extension length,
- the trigger guard roll pin tool (100) comprising:
- a mounting body (102), and successively adjacent to the mounting body,
- a flange support (104),
- a spacer (106), and
- a base (110);
- wherein
- the mounting body (102) is sized and shaped to fit upon the pistol grip retention flange and the mounting body (102) further comprises a retention screw hole (124), and
- during use to install or remove the roll pin, the tool (100) is mounted to the pistol grip retention flange (16) via the grip retention screw (32) that is installed through the retention screw hole (124);
- and
- the flange support comprises an inward step at the front of the tool in the direction of firing when the tool is installed on the firearm, and the flange support fits adjacent the left trigger guard retention flange and extends forward from the mounting body in the direction of firing when the tool is installed on the firearm by at least the forward extension length to provide support for the left trigger guard retention flange when the tool is installed on the firearm and the roll pin is driven in or out of the left roll pin hole.
Dependencies are inferred from the claim text.