Hinge Pin Connector

摘要

Improvements and modifications in the rifle and submachine gun platforms to improve accuracy, improve user functionality, simplify and improve the machining and manufacturing and assembly process are presented. Specifically, the disclosure describes a hinge pin connection system for an access door, a retention mechanism that eliminates freedom of movement for hand guards, cuts in a barrel extension that reduce or eliminate barrel rotation, a barrel retention mechanism that allows for securing of a barrel from the sides of a firearm, a dove tail connection between an up rod and bolt carrier, and an aperture located on a lower receiver for mounting slings and other accessories.

主权项

1. An integral hinge pin connector for a firearm, the hinge pin connector comprising:
a substantially horizontal shelf member extending from an outer surface of a firearm receiver; a containing member extending downwardly from the outer surface of the receiver to define a longitudinal slot between the containing member and the receiver surface, the slot aligned with the axis of the firearm and having a cross dimension in at least one direction that is approximately equal to the diameter of a hinge pin to be secured in the connector; and wherein the shelf member, the containing member, and the surface of the receiver are configured to retain an ejection port hinge pin in a substantially horizontal position.