Mechanical buffer for shouldered weapon

• US 7,478,495 B1
• Filed: 12/18/2006
• Issued: 01/20/2009
• Est. Priority Date: 12/18/2006
• Status: Expired due to Fees

• Current Assignee: U.S. Government
• Original Assignee: The United States Of America As Represented By The Secretary Of The Army
• Inventors: Donovan, Brian, Foltz, Adam, Russell, Kevin, Heinsohn, John, Alzamora, Ronny
• Primary Examiner(s): Carone; Michael
• Assistant Examiner(s): David; Michael D
• Application Number:
  US11/612,025
• Time in Patent Office: 764 Days
• Field of Search: 42/74, 89/440.1, 89/440.2, 891/98
• US Class Current: 42/74
• CPC Class Codes: F41A 3/84 mounted within the gun stock
• CPC Class Codes: F41C 23/04 Folding or telescopic stocks or stock parts articulated or collapsible guns F41A11/04
• CPC Class Codes: F41C 23/06 Stocks or firearm frames specially adapted for recoil reduction

Abstract

A weapon includes a receiver having a bolt carrier assembly therein; a buttstock disposed behind the receiver, the buttstock having a tubular opening adjacent an end of the bolt carrier assembly; a larger diameter spring disposed in the tubular opening; a smaller diameter spring disposed in the larger diameter spring; a rod disposed in the rear end of the smaller diameter spring; a bumper attached to the rod; and a cap disposed in the front end of the spring, the cap having a head wherein a front side of the head engages the end of the bolt carrier assembly and a front end of the larger diameter spring bears against a rear side of the head.

Claims

1. A weapon, comprising:

a receiver having a bolt carrier assembly therein;

a buttstock disposed behind the receiver, the buttstock having a tubular opening adjacent an end of the bolt carrier assembly;

a larger diameter spring disposed in the tubular opening;

a smaller diameter spring disposed in the larger diameter spring;

a rod disposed in the rear end of the smaller diameter spring;

a bumper attached to the rod; and

a cap disposed in the front end of the springs, the cap having a head wherein a front side of the head engages the end of the bolt carrier assembly and a front end of the larger diameter spring bears against a rear side of the head, the rod not extending into the cap.

2. The weapon of claim 1 wherein the bumper comprises a polymer.

3. The weapon of claim 1 wherein the weapon is an M4 Carbine.

4. The weapon of claim 1 wherein the rod is solid.

5. In a weapon having a receiver with a bolt carrier assembly therein;

a buttstock disposed behind the receiver, the buttstock having a tubular opening adjacent an end of the bolt carrier assembly; and

a buffer spring disposed in the tubular opening, a supplemental buffer assembly, comprising;

a second buffer spring disposed in the buffer spring;

a rod disposed in the rear end of the second buffer spring;

a bumper attached to the rod; and

a cap disposed in the front end of the springs, the cap having a head wherein a front side of the head engages the end of the bolt carrier assembly and a front end of the buffer spring bears against a rear side of the head, the rod not extending into the cap.

6. The buffer assembly of claim 5 wherein the bumper comprises a polymer.

7. The buffer assembly of claim 5 wherein the rod is solid.