Ambidextrous M16 Charging Handle with Protected Spring
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Solution Overview
Problem
The existing charging handles for M16 family firearms are difficult to operate ambidextrously, especially for left-handed shooters, and are prone to rust and mechanical failure due to exposed springs and weak roll pins.
Innovation Solution
A charging handle design with a 'T' shape featuring a latch mechanism with operable members on both sides, protected internal spring and plunger housing, and robust axial pins for secure attachment, allowing independent operation and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the latch mechanism is located on the left side of the grasping handle, then the charging handle can be operated by right-handed shooters, but it becomes difficult for left-handed shooters and right-handed shooters using their left hand
Solution Approach 1:
The charging handle is designed with asymmetric latch mechanisms positioned at opposite ends of the grasping handle, allowing each end to be operated independently. This asymmetric configuration enables right-handed shooters to use the left-side latch while left-handed shooters can use the right-side latch, resolving the contradiction between ease of operation for a specific hand and adaptability for ambidextrous use.
2Device complexity
If the spring is exposed on the rear of the charging handle, then the latch mechanism can be simple and visible, but the spring is exposed to elements resulting in rusting and contamination
Solution Approach 1:
The spring mechanism is nested within the hollow interior of the grasping handle, which serves as a protective housing. This nesting configuration maintains the simplicity of the latch mechanism while shielding the spring from environmental elements, thereby preventing rusting and contamination without adding external complexity.
3Ease of manufacture
If a roll pin is used to secure the latch mechanism, then the assembly can be simple, but the roll pin may shear through during hard use separating the latch mechanism
Solution Approach 1:
The weak roll pin is extracted and replaced with a stronger retaining mechanism that integrates the latch mechanism directly to the charging handle. This extraction of the insufficient component and its replacement with a more robust solution maintains ease of manufacture while significantly improving resistance to shearing forces during hard use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables ambidextrous operation, protects the spring from environmental damage, and provides a robust mechanism resistant to shearing, improving usability and reliability for M16 type firearms.
Implementation Method 1
The prior art charging handle relies on a spring force to bias the latch element into operational engagement with the upper receiver and thereby retain the charging handle in place
Data Source
AI summary
An ambidextrously operated charging handle for use with the M16 family of firearms is provided. The charging handle provides a latch mechanism consisting of two extended handles which are in operational communication with each other. Either handle may be independently retracted to disengage the latch mechanism of the charging handle from the host firearms receiver. The spring-biased mechanism of the charging handle is sheltered within the interior of the charging handle thereby protecting it from the elements. Further, an improved axial pin has been provided to secure the handles of the latch mechanism to the grasping portion of the charging handle.