Reinforcement member for a firearm stock and related methods

Patent metadata

Field	Value
Publication number	US-10935342-B2
Application number	US-201916298329-A
Country	US
Kind code	B2
Filing date	Mar 11, 2019
Priority date	Jun 30, 2016
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A firearm stock with a reinforcing member and related methods are disclosed. A reinforcing member has a proximal end having at least one proximal tab shaped to engage a firearm housing, and a distal end having a locking pin engagement surface and at least one distal tab shaped to engage at least one of the firearm housing or a battery tube. The member also has a longitudinal axis extending between the proximal end and the distal end, and a first wall having a longitudinal length greater than a width. The member also has at least one sidewall one of coupled to or unitary with the first wall, and at least one side tab positioned on the sidewall and extending towards a center portion of the reinforcing member.

First claim

What is claimed is:

1. A firearm stock comprising:
a housing having a first hardness, a ridge substantially positioned in a central portion of the housing and extending in a longitudinal direction;
a movable locking pin at least partially positioned in a distal portion of the housing and movably interfacing with a vertical aperture in the ridge;
a reinforcing member positioned on a top portion of the ridge and extending longitudinally less than an entire length of the firearm stock, the reinforcing member comprising:
at least one side tab positioned on at least one sidewall and extending inwardly to engage the ridge of the housing.

2. The firearm stock of claim 1 , wherein the reinforcing member comprises:
a second hardness greater than the first hardness,
a first wall having a longitudinal length greater than a width and a distal end having a locking pin engagement surface shaped to engage the movable locking pin, and
the at least one sidewall coupled to or unitary with the first wall.

3. The firearm stock of claim 1 , wherein the reinforcing member comprises:
a first wall positioned adjacent to or abutting the top portion of the ridge; and
the at least one sidewall positioned adjacent to or abutting one or more side portions of the ridge, the at least one sidewall having the at least one side tab extending towards the one or more side portions of the ridge.

4. The firearm stock of claim 3 , wherein:
the at least one side tab is shaped to engage the ridge to position the reinforcing member relative to the housing.

5. The firearm stock of claim 1 , wherein the reinforcing member comprises:
at least one distal tab extending from the at least one sidewall of the reinforcing member, the at least one distal tab shaped and positioned to engage a flange in at least one of the housing or a battery tube of the firearm stock.

6. The firearm stock of claim 1 , wherein the reinforcing member comprises:
at least one proximal tab extending from the at least one sidewall of the reinforcing member, the at least one proximal tab shaped and positioned to engage a proximal wall of the housing.

7. The firearm stock of claim 1 , wherein the reinforcing member comprises:
a distal portion having a pin engagement surface;
a proximal portion having an engagement surface shaped and positioned to engage a proximal wall of the housing; and
a first wall shaped and positioned to abut the ridge of the housing.

8. The firearm stock of claim 1 , wherein:
the reinforcing member is seated on the ridge of the housing, and comprises a plurality of side tabs, including the at least one side tab, shaped to engage at least two of: the ridge, a proximal wall of the housing, or an inwardly-extending flange in the housing or an inwardly-extending flange of a battery tube.

9. The firearm stock of claim 1 , wherein:
the at least one side tab of the reinforcing member extends partway to a bottom of a sidewall of the at least one sidewall.

10. The firearm stock of claim 1 , wherein
the reinforcing member comprises:
a first elongate member configured to extend longitudinally within the housing;
a second elongate member coupled to a distal end of the first elongate member, wherein the second elongate member is configured to extend within the housing, and wherein the first and second elongate members are coupled together by one or more curved sections.

11. The firearm stock of claim 1 , wherein the reinforcing member is shaped and positioned to transfer forces between a locking pin engagement surface and a proximal wall.

12. The firearm stock of claim 1 , wherein the at least one side tab extends inwardly at an angle to engage the ridge of the housing.

13. The firearm stock of claim 1 , wherein the housing is configured to move in relation to a buffer tube.

14. A method of making a reinforcing member for a firearm stock, the firearm stock comprising a housing having a first hardness, and a ridge substantially positioned in a central portion of the housing and extending in a longitudinal direction, wherein the reinforcing member is positioned on a top of the ridge and extending longitudinally less than an entire length of the firearm stock, the method comprising:
providing a section of sheet metal;
shaping a first wall from the sheet metal, the first wall having a longitudinal length greater than a width, and a distal end having a locking pin engagement surface shaped to engage a locking pin, the locking pin movably interfacing with a vertical aperture in the ridge;
shaping at least one sidewall from the sheet metal; and
shaping at least one side tab extending inwardly from the at least one sidewall to engage the ridge of the housing; wherein
the shaping the first wall and the shaping the at least on sidewall comprise bending the section of sheet metal to form the first wall and the at least one sidewall whereby the first wall and the at least one sidewall are unitary.

15. The method of claim 14 , further comprising:
shaping at least one proximal tab extending proximally from at least one of the first wall or the at least one sidewall.

16. The method of claim 14 , further comprising:
shaping a housing or battery tube flange engagement surface, a butt pad engagement surface, and a housing ridge engagement surface in the reinforcing member.

17. The method of claim 14 , further comprising shaping at least one distal tab extending at an angle from the at least one sidewall, the at least one distal tab extending away from a longitudinal axis of the reinforcing member.

18. The method of claim 14 , wherein the reinforcing member is shaped and positioned to transfer forces between the locking pin and the proximal wall.

19. A firearm comprising:
a firearm stock, the firearm stock comprising:
a housing having a first hardness, a ridge substantially positioned in a central portion of the housing and extending in a longitudinal direction;
a movable locking pin at least partially positioned in a distal portion of the housing and movably interfacing with a vertical aperture in the ridge;
a reinforcing member positioned on a top of the ridge and extending longitudinally less than an entire length of the firearm stock, the reinforcing member further comprising:
at least one side tab positioned on at least one sidewall and extending inwardly from the at least one sidewall and shaped and positioned to engage the ridge of the housing;

a receiver extension slidably coupled to the housing and secured in one of a plurality of positions via the movable locking pin;
a receiver coupled to the receiver extension; and
a barrel coupled to the receiver.

20. The firearm of claim 19 , further comprising a proximal wall, the reinforcing member shaped and positioned to transfer forces between the locking pin and the proximal wall.

Assignees

• Magpul Ind Corp

Inventors

• Miller Christopher F
• Chow Eric
• Roberts Timothy Eric

Classifications

• F41C23/20

  Butts; Butt plates; Mountings therefor (F41C23/08, F41C23/10, {F41C23/14} take precedence) · CPC title

• F41C23/14 Primary

  Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop · CPC title

• F41C23/04

  Folding or telescopic stocks or stock parts (articulated or collapsible guns F41A11/04) · CPC title

• F41C23/06

  Stocks {or firearm frames} specially adapted for recoil reduction · CPC title

• B21D22/00

  Shaping without cutting, by stamping, spinning, or deep-drawing (otherwise than using rigid devices or tools or yieldable or resilient pads B21D26/00) · CPC title