Jig for firearm lower receiver manufacture
Assignee80 Percent Arms Inc.
InventorTilden Alan Smith
Life of this patent
Estimating the term…
Abstract
A machining tool assembly is provided for machining a blank to form a firearm lower receiver. The assembly includes a pair of side plates positionable on opposed sides of the blank to capture the blank therebetween. A template plate having a template aperture is adapted to be removeably attachable to the side plates. The template aperture is aligned with a top surface of the blank and is adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture. A centering mechanism is adapted to be removeably attachable to the template plate, with the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate.
Claims24
A machining tool assembly for machining portions of a blank to form a firearm lower receiver, the blank having a top surface and a buffer tube, the machining tool assembly comprising:
- a pair of side plates adapted to be positioned on opposed sides of the blank to capture the blank therebetween;
- a template plate adapted to be removably attachable to the pair of side plates, the template plate including a template aperture formed therein, the template aperture having regions of varying width, the template aperture being aligned with the top surface of the blank when the blank is captured between the pair of side plates and the template plate is secured to the pair of side plates, the template aperture being adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture;
- and
- a centering mechanism adapted to be removably attachable to the template plate, the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate;
- an alignment insert configured to be insertable through the opening in the centering mechanism and the void in the blank to align the blank with the template plate;
- wherein the alignment insert is a buffer screw having external threads adapted to engage internal threads formed on the buffer tube.
A machining tool assembly for machining portions of a blank to form a firearm lower receiver, the blank having a top surface and a buffer tube, the machining tool assembly comprising:
- a pair of side plates adapted to be positioned on opposed sides of the blank to capture the blank therebetween, each side plate having a first set of apertures associated with a first firearm lower receiver and a second set of apertures associated with a second firearm lower receiver;
- a template plate adapted to be removably attachable to the pair of side plates, the template plate including a template aperture formed therein, the template aperture being aligned with the top surface of the blank when the blank is captured between the pair of side plates and the template plate is secured to the pair of side plates, the template aperture being adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture;
- each of the pair of side plates being selectively transitional relative to the template plate between a first orientation and a second orientation to selectively align one of the first set of apertures and the second set of apertures with the blank, each side plate rotating at least ninety degrees relative to the template plate as the corresponding side plate transitions between the first orientation and the second orientation;
- wherein each side plate rotates 180 degrees between the first orientation and the second orientation.
A machining tool assembly for machining portions of a blank to form a firearm lower receiver, the blank having a top surface and a buffer tube, the machining tool assembly comprising:
- a pair of side plates adapted to be positioned on opposed sides of the blank;
- a template plate adapted to be removably attachable to the pair of side plates, the template plate including an aperture formed therein, the aperture being aligned with the top surface of the blank when the blank is positioned between the pair of side plates and the template plate is secured to the pair of side plates, the aperture being adapted for machining a cavity within the blank through the aperture;
- and
- a centering mechanism adapted to be removably attachable to the template plate, the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate;
- an alignment insert configured to be insertable through the opening in the centering mechanism and the void in the blank to align the blank with the template plate;
- wherein the alignment insert is a buffer screw having external threads and the void is the buffer tube of the blank, the external threads adapted to engage internal threads formed in the buffer tube.
Dependencies are inferred from the claim text.