Hand guard for firearm

Patent metadata

Field	Value
Publication number	US-9766036-B2
Application number	US-201514966368-A
Country	US
Kind code	B2
Filing date	Dec 11, 2015
Priority date	Dec 15, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A hand guard-to-barrel clamping system having provisions for internal clamping fasteners is disclosed. A hand guard assembly includes upper and lower members each having bores tangential to a longitudinal axis of the assembly. The bores are arranged such that fasteners can be inserted through the bores for securing the upper and lower members together, thereby clamping the hand guard assembly to the firearm. Such fasteners are internal to the hand guard assembly, which provides a slim design that is easier to hold.

First claim

What is claimed is:

1. A hand guard assembly attachable to a receiver of a barrel of a firearm, comprising:
a lower hand guard member having a first plurality of bores formed therein, each of the first plurality of bores being tangential to an internal surface of the lower hand guard member, the internal surface defining a central hollow concentric about a longitudinal axis of the lower hand guard member; and
an upper hand guard member having a second plurality of bores formed therein, each of the second plurality of bores being tangential to the internal surface and being axially aligned with a respective one of the first plurality of bores while the upper hand guard member is mated or attached to the lower hand guard member;
wherein each of the first and second plurality of bores is entirely beneath an overall external surface the hand guard assembly while the upper hand guard member is mated or attached to the lower hand guard member.

2. The hand guard assembly of claim 1 , wherein at least one of the first and second plurality of bores is internally threaded.

3. The hand guard assembly of claim 1 , wherein each of the first and second plurality of bores are configured to receive a fastener therethrough, firstly through the second plurality of bores and secondly through the first plurality of bores, the fastener being recessed beneath the overall external surface of the hard guard assembly while fastener is used to attach the upper hand guard member to the lower hand guard member.

4. The hand guard assembly of claim 3 , further comprising the fastener.

5. The hand guard assembly of claim 3 , wherein the fastener is a screw.

6. The hand guard assembly of claim 1 , wherein the first and second plurality of bores are located substantially above a bore centerline of the firearm.

7. The hand guard assembly of claim 1 , wherein each pair of corresponding ones of the first and second plurality of bores are arranged in a staggered pattern along the longitudinal axis.

8. The hand guard assembly of claim 1 , wherein the upper member includes a plurality of access holes each axially aligned with a respective one of the second plurality of bores for inserting fasteners into the second plurality of bores.

9. A hand guard assembly attachable to a receiver of a barrel of a firearm, comprising:
a C-shaped lower hand guard member comprising:
an internal surface defining a central hollow concentric about a longitudinal axis of the lower hand guard member;
an external surface;
a first lower hand guard mating surface extending between a first end of the internal surface and a first end of the external surface, the first lower hand guard mating surface lying in a first plane;
a second lower hand guard mating surface extending between a second end of the internal surface and a second end of the external surface, the second lower hand guard mating surface lying in a different second plane that intersects the first plane; and
a first plurality of bores tangential to the internal surface of the lower hand guard member, each of which extends through one of the first and second lower hand guard mating surfaces; and

an upper hand guard member comprising:
a first upper hand guard mating surface configured to abut the first lower hand guard mating surface in facing relationship while the upper hand guard member is mated or attached to the lower hand guard member;
a second upper hand guard mating surface configured to abut the second lower hand guard mating surface in facing relationship while the upper hand guard member is mated or attached to the lower hand guard member; and
a second plurality of bores tangential to the the internal surface of the lower hand guard member while the upper hand guard member is attached to the lower hand guard member, each of which extends between one of the first and second upper hand guard mating surfaces and another surface distal from respective first or second upper hand guard mating surface and is axially aligned with a respective one of the first plurality of bores while the upper hand guard member is mated or attached to the lower hand guard member;

wherein each of the first and second plurality of bores is entirely beneath an overall external surface of the hand guard assembly while the upper hand guard member is mated or attached to the lower hand guard member.

10. The hand guard assembly of claim 9 , wherein at least one of the first and second plurality of bores is internally threaded.

11. The hand guard assembly of claim 9 , wherein each of the first and second plurality of bores are configured to receive a fastener therethrough, firstly through the second plurality of bores and secondly through the first plurality of bores, the fastener being recessed beneath the overall external surface of the hard guard assembly while fastener is used to attach the upper hand guard member to the lower hand guard member.

12. The hand guard assembly of claim 11 , further comprising the fastener.

13. The hand guard assembly of claim 11 , wherein the fastener is a screw.

14. The hand guard assembly of claim 9 , wherein the first and second plurality of bores are located substantially above a bore centerline of the firearm.

15. The hand guard assembly of claim 9 , wherein each pair of corresponding ones of the first and second plurality of bores are arranged in a staggered pattern along the longitudinal axis across the respective first and second upper and lower hand guard mating surfaces.

16. The hand guard assembly of claim 9 , wherein the upper member includes a plurality of access holes each axially aligned with a respective one of the second plurality of bores for inserting fasteners into the second plurality of bores.

17. A kit comprising:
a lower hand guard member having a first plurality of bores formed therein, each of the first plurality of bores being tangential to an internal surface of the lower hand guard member, the internal surface defining a central hollow concentric about a longitudinal axis of the lower hand guard member;
an upper hand guard member having a second plurality of bores formed therein, each of the second plurality of bores being tangential to the internal surface and being axially aligned with a respective one of the first plurality of bores while the upper hand guard member is mated or attached to the lower hand guard member; and
a plurality of fasteners configured to be received within the first and second plurality of bores for securing the upper hand guard member to the lower hand guard member,. the fastener configured to be recessed beneath an overall external surface of the hard guard assembly while fastener is used to attach the upper hand guard member to the lower hand guard member;
wherein each of the first and second plurality of bores is entirely beneath the overall external surface of the hand guard assembly while the upper hand guard member is mated or attached to the lower hand guard member.

18. The kit of claim 17 , wherein the first and second plurality of bores are located substantially above a bore centerline of the firearm.

19. The kit of claim 17 , wherein the upper member includes a plurality of access holes each axially aligned with a respective one of the second plurality of bores for inserting the fasteners into the second plurality of bores.

20. The kit of claim 17 , further comprising a tool for operating the fasteners.

Assignees

• Sig Sauer Inc

Inventors

• Daley Jr William C

Classifications

• F41G11/004

  Mountings with clamping means on the device embracing at least a part of the firearm, e.g. the receiver or a dustcover (F41G11/003 takes precedence) · CPC title

• F41G11/003

  Mountings with a dove tail element, e.g. "Picatinny rail systems" · CPC title

• F41C23/16 Primary

  Forestocks; Handgrips; Hand guards (pump-action guns F41C7/02) · CPC title