Ambidextrous Charging Handle Guide Tracks for Self-Loading Firearms

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Solution Overview

Problem

Existing self-loading firearms often have charging handles that protrude and can cause injuries or malfunctions, and are not easily adaptable for left- or right-handed users, leading to potential malfunctions during use.

Innovation Solution

A weapon housing with a first and second guide track for the charging handle, allowing ambidextrous operation without tools, and a locking mechanism to prevent unintentional actuation, ensuring ergonomic adaptability and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a charging handle is permanently coupled to the bolt and protrudes from the weapon, then the charging mechanism is simple and reliable, but it causes risk of injury to the shooter and potential malfunctions when striking obstacles

Engineering Contradiction:

Improvecharging mechanism reliabilityVSAvoidinjury risk and malfunction risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The charging handle is made movable relative to the weapon housing, allowing it to be repositioned between a protruding position (for operation) and a retracted position (for safety). This dynamic configuration resolves the contradiction by enabling the handle to adapt its position based on operational needs versus safety requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The charging mechanism is divided into separable components: the charging handle can be detached from the bolt assembly. This segmentation allows the handle to be removed or repositioned independently, eliminating the injury and malfunction risks associated with a permanently protruding handle while maintaining the reliability of the charging function when properly assembled.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If the charging handle is fixed on one side of the weapon, then the structure is simple, but it is not adaptable for left- or right-handed users

Engineering Contradiction:

Improvecharging handle structureVSAvoidambidextrous operation capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The charging handle is designed to be movable and repositionable between left and right sides of the weapon. This dynamic positioning capability allows the same simple structure to serve both left-handed and right-handed users, resolving the contradiction between structural simplicity and user adaptability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The charging handle mechanism is designed as a universal component that can be operated from either the left or right side of the weapon. By making the handle repositionable, a single structure serves multiple functions and user preferences, eliminating the need for different configurations for different users.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the charging handle can be moved between left and right positions, then adaptability for different users is improved, but the risk of unintentional actuation increases

Engineering Contradiction:

Improveambidextrous operation capabilityVSAvoidunintentional actuation risk

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

A locking mechanism is implemented that prevents the charging handle from moving unintentionally. The lock actively counteracts the potential for accidental actuation while allowing intentional movement between positions, resolving the contradiction between adaptability and reliability.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

A locking mechanism serves as an intermediary between the charging handle and the weapon system. This intermediary component controls the handle's movement, allowing it to be repositioned deliberately while preventing unintentional actuation, thus maintaining both adaptability and reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4290173B1Weapon housing of an automatic loading weapon and automatic loading weapon with such a weapon housing

Publication Date: 2026.02.25 HECKLER & KOCH GMBH

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AI summary

The invention relates to a weapon housing (10) for a self-loading firearm (100) which has a bolt guided longitudinally within the weapon housing (10), comprising: a first guide track (11) within which a charging handle (20) is movable for moving a charging tube (21) that can be brought into contact with or is in contact with the bolt. The invention is characterized by a second guide track (12) connected to the first guide track (11) via a first recess (13) in the weapon housing, within which the charging handle (20) is movable for moving the charging tube (21), so that the charging handle (20) can be operated selectively from the left or right side. The invention also relates to a self-loading firearm equipped with such a weapon housing (10).