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US-12618624-B2 - Modular bolt action rifle

US12618624B2US 12618624 B2US12618624 B2US 12618624B2US-12618624-B2

Abstract

The present disclosure presents a modular bolt action rifle system with roller bearings having an upper receiver assembly housing a barrel, a lower receiver assembly comprising an AR-style fire control system and a magazine well, a bolt carrier group assembly including a bolt carrier, top roller bearings and side roller bearings, and a handguard assembly, wherein the lower receiver assembly and its AR-style fire control and magazine well are releasably attached to the upper receiver, and prior to attachment of the barrel assembly the bolt carrier group assembly, consisting of the bolt carrier, bolt head, bolt charging handle, top roller bearings, and side roller bearings is inserted unto the upper receiver. An extension of the barrel assembly is releasably attached to the upper receiver. The barrel assembly is releasably secured by releasable attachment of the handguard assembly to a barrel extension receiver of the upper receiver assembly.

Inventors

  • Swetal K. Patel

Assignees

  • DEFENSE RESEARCH AND DEVELOPMENT, LLC

Dates

Publication Date
20260505
Application Date
20230911

Claims (12)

  1. 1 . A modular bolt-action rifle system, comprising: an upper receiver assembly comprising a bolt carrier group assembly; a fire control system; a magazine well; a barrel assembly; and a handguard assembly; wherein the upper receiver assembly is releasably attached to the fire control system, the magazine well is releasably attached to the upper receiver assembly by inserting the magazine well into a channel on an underside of the upper receiver assembly, and the barrel assembly is releasably attached to the upper receiver assembly into a barrel receiver extension with a detente at a 12 o'clock position; and wherein the barrel assembly and magazine well are releasably secured by releasable attachment of the handguard assembly to the barrel receiver extension of the upper receiver assembly by insertion of one or more shoulder screws.
  2. 2 . The modular bolt-action rifle system of claim 1 , wherein the fire control system is an AR-style fire control system.
  3. 3 . The modular bolt-action rifle system of claim 2 , wherein the AR-style fire control is releasably attached to the upper receiver assembly using a retaining pin.
  4. 4 . The modular bolt-action rifle system of claim 1 , wherein the magazine well is a floating magazine well.
  5. 5 . The modular bolt-action rifle system of claim 1 , wherein the one or more shoulder screws compress a handguard assembly to both the barrel receiver extension and secure the handguard assembly to the barrel receiver extension, magazine well, and upper receiver assembly by engaging one or more channels in the barrel receiver extension.
  6. 6 . The modular bolt-action rifle system of claim 1 , wherein the fire control is an AR-style fire control and is releasably attached to the upper receiver assembly using a retaining pin, and wherein the bolt carrier group assembly comprises a bolt, a charging handle fastener, a charging handle, a firing pin, a bolt carrier guide pin, and a bolt carrier.
  7. 7 . The modular bolt action rifle system of claim 6 , wherein the firing pin comprises a machined slot to receive the bolt carrier guide pin and the guide pin inserts into a slot in the bolt carrier.
  8. 8 . The modular bolt action rifle system of claim 7 , wherein a caliber of the rifle is interchangeable with another caliber by: removing the bolt carrier guide pin, allowing for disassembly of the bolt carrier group assembly, and interchanging a different caliber bolt and barrel assembly.
  9. 9 . The modular bolt action rifle system of claim 8 , wherein the caliber of the rifle is interchangeable among .338 Lapua, .338 Norma, .300 Norma, .416 Rigby, and .308 calibers by: removing the bolt carrier guide pin, allowing for disassembly of the bolt carrier group assembly, and interchanging a .338 Lapua, .338 Norma, .300 Norma, .416 Rigby, or .308 caliber bolt and barrel assembly.
  10. 10 . A modular bolt-action rifle system, comprising: an upper receiver assembly comprising a bolt carrier group assembly comprising a bolt, a charging handle fastener, a charging handle, a firing pin, a bolt carrier guide pin, and a bolt carrier; a fire control system, wherein the fire control system is an AR-style fire control system and is releasably attached to the upper receiver assembly using an AR-style retaining pin; a floating magazine well; a barrel assembly, wherein the barrel assembly is releasably attached to the upper receiver assembly into a barrel receiver extension with a détente at a 12 o'clock position; and a handguard assembly; wherein the upper receiver assembly is releasably attached to the fire control system, the magazine well is releasably attached to the upper receiver assembly by inserting the magazine well into a channel on an underside of the upper receiver assembly, and the barrel assembly is releasably attached to the upper receiver assembly; wherein the barrel assembly and magazine well are releasably secured by releasable attachment of the handguard assembly to the barrel receiver extension of the upper receiver assembly by insertion of one or more shoulder screws; wherein the one or more shoulder screws compress a handguard assembly to both the barrel receiver extension and secure the handguard assembly to the barrel receiver extension, magazine well, and upper receiver assembly by engaging one or more channels in the barrel receiver extension; wherein the firing pin comprises a machined slot to receive the bolt carrier guide pin and the bolt carrier guide pin inserts into a slot in the bolt carrier; and wherein a caliber of the rifle is interchangeable with another caliber by removing the bolt carrier guide pin, allowing for disassembly of the bolt carrier group assembly, and interchanging a different caliber bolt and barrel assembly.
  11. 11 . The modular bolt action rifle system of claim 10 , wherein the caliber of the rifle is interchangeable among .338 Lapua, .338 Norma, .300 Norma, .416 Rigby, and .308 calibers by removing the bolt carrier guide pin, allowing for disassembly of the bolt carrier group assembly, and interchanging a .338 Lapua, .338 Norma, .300 Norma, .416 Rigby, or .308 caliber bolt and barrel assembly.
  12. 12 . A modular bolt-action rifle system, comprising: an upper receiver assembly comprising a bolt carrier group assembly; a fire control system; a magazine well; a barrel assembly; and a handguard assembly; wherein the upper receiver assembly is releasably attached to the fire control system, the magazine well is releasably attached to the upper receiver assembly, and the barrel assembly is releasably attached to the upper receiver assembly; wherein the fire control is an AR-style fire control and is releasably attached to the upper receiver assembly using a retaining pin, and wherein the bolt carrier group assembly comprises a bolt, a charging handle fastener, a charging handle, a firing pin, a bolt carrier guide pin, and a bolt carrier; wherein the firing pin comprises a machined slot to receive the bolt carrier guide pin and the guide pin inserts into a slot in the bolt carrier; and wherein a caliber of the rifle is interchangeable with another caliber by: removing the bolt carrier guide pin, allowing for disassembly of the bolt carrier group assembly, and interchanging a different caliber bolt and barrel assembly.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to U.S. provisional application entitled, “Modular Bolt Action Rifle,” having application No. 63/405,272, filed Sep. 9, 2022, which is entirely incorporated herein by reference. TECHNICAL FIELD The present disclosure is generally related to modular bolt-action rifles. BACKGROUND A rifle is a type of weapon that fires rounds. Typically, the rifle includes a trigger, a hammer, and a barrel. The round is positioned in the barrel, and, when the trigger is pulled, the hammer fires the round through the barrel. A bolt action rifle is loaded by a manually operated bolt. The rifle bolt is operated manually by using a bolt handle to open and close the breech. The breech is opened by rotating the bolt handle to unlock the bolt from the receiver and pulling it rearward to open the breech. Opening the breech provides for the extraction and ejection of a spent cartridge case, cocks the firing pin, and draws a new cartridge round from the magazine and into the breech. The bolt is closed by rotating the bolt handle to the original closed position to make the rifle ready to fire again. The M1903 Springfield rifle is a type of conventional bolt-action rifle used primarily during the first half of the 20th century. The Remington M-700 rifle is another type of conventional bolt-action rifle commonly used by civilians for hunting and by military and civilian law-enforcement agencies as sniper rifles. A modular rifle typically includes a lower receiver assembly, an upper receiver assembly housing the barrel, and a coupling mechanism. The M-16 style rifle is a type of modular rifle system commonly used by military and police forces that features a gas-operated bolt and bolt carrier system, as disclosed, for example, in U.S. Pat. No. 2,951,424, issued to Eugene M. Stoner on Sep. 6, 1960 (incorporated herein by reference in its entirety). The AR-15 style rifle is a similarly designed modular rifle system commonly sold and used in civilian applications. An “AR-style” rifle is characterized by features derived from the ArmaLite Rifle (“AR”) platform, particularly the AR-15, the hallmark of which is modularity allowing customization of components like barrels, stocks, handguards, and optics, as opposed to a rifle with a standardized receiver system. This modularity includes an upper receiver (housing the barrel, bolt, and gas system) attached to a lower receiver (containing the trigger group and magazine well), facilitating easy assembly and modification. The term “AR-style” applies to rifles known to comprise the AR-15's design, regardless of the manufacturer or specific model, and is often used to distinguish semi-automatic civilian versions from military counterparts like the aforementioned M-16. Systems and methods for modular rifles and for quick take-down barrel systems and methods are disclosed in U.S. Pat. Nos. 7,810,271, 8,661,963, 8,689,478, and 8,739,449 issued to Swetal K. Patel. BRIEF DESCRIPTION OF THE DRAWINGS Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. FIG. 1 is a perspective view of the assembled modular bolt action rifle system, showing the upper receiver, fire control, magazine well, stock, barrel, and handguard assembled in accordance with one exemplary embodiment of the present disclosure. FIG. 2 is a perspective view of the assembled modular bolt action rifle system, showing the upper receiver, fire control, magazine well, stock, barrel, and handguard assembled in accordance with one exemplary embodiment of the present disclosure. FIG. 3 is a perspective view of the assembled modular bolt action rifle system, without a stock, barrel or handguard attached for demonstrative purposes, showing the upper receiver, fire control, magazine well, and bolt carrier group assembled in accordance with one exemplary embodiment of the present disclosure. FIG. 4 is a perspective view of the assembled modular bolt action rifle system, shown without a stock or barrel for demonstrative purposes, showing the upper receiver, fire control, magazine well, handguard, and bolt carrier group assembled in accordance with one exemplary embodiment of the present disclosure. FIG. 5 is an exploded perspective of the modular bolt action rifle system, without a barrel for demonstrative purposes, showing the upper receiver, fire control, magazine well, handguard, and bolt carrier group disassembled in accordance with one exemplary embodiment of the present disclosure. FIG. 6 is a perspective view of the upper receiver of the modular bolt action rifle, in accordance with one exemplary embodiment of the present disclosure. FIG. 7 is a perspective view