Firing Pin Conversion Kit for Smoother Adjustable Trigger Pull
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Solution Overview
Problem
The existing firing pin system components in firearms cause a gritty trigger feel and degrade the trigger pull performance due to misalignment and increased friction, which affects the overall user experience and functionality.
Innovation Solution
The introduction of a Drop-In Improved Trigger Pull Firing Pin System Conversion Kit (DIITPFPSCK) comprising Spring Cup Aligning Washers (SCAW) and Compression Adjusting Shims (CAS) to align Spring Cups and adjust trigger pull weight, along with optional Half Spacer Sleeves (HSS) to minimize misalignment and friction, allowing for a smooth trigger pull.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Spring Cups are used in the firing pin system, then the firearm can function, but misalignment between Spring Cups and Spring causes gritty trigger feel
Solution Approach 1:
A spring cup aligning washer is introduced as an intermediary component between the spring cup and spring assembly. This washer features alignment protrusions that engage with corresponding recesses in the spring cup, ensuring proper alignment and eliminating the gritty trigger feel caused by misalignment.
Solution Approach 2:
The spring cup assembly is segmented into multiple components: the spring cup itself, the aligning washer with protrusions, and compression shims. This segmentation allows each component to perform its specific function independently, with the washer handling alignment and shims handling compression adjustment.
2Ease of operation
If trigger pull weight is reduced for better feel, then trigger smoothness improves, but trigger pull weight may become too light for duty configurations
Solution Approach 1:
The system allows dynamic adjustment of trigger pull weight through the use of multiple compression shims of varying thicknesses. Users can select different shim combinations to achieve the desired trigger pull weight, making the system adaptable to different operational requirements such as competition versus duty configurations.
Solution Approach 2:
By changing the number and thickness of compression shims, the trigger pull weight parameter can be adjusted. Minimal numbers of shims decrease trigger pull weight for smooth feel, while additional shims increase trigger pull weight for duty configurations.
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
The kit eliminates the gritty trigger feel and allows for customizable trigger pull weight, enhancing user experience and system reliability while reducing shipping costs and complexity.
Implementation Method 1
a compression spring positioned at the rearward end of the firing pin and bearing against the forward face of the spacer sleeve
Data Source
AI summary
A firearm firing pin system upgrade kit that improves trigger feel and easily converts for heavier or lighter trigger pulls. In some embodiments a kit which eliminates a previously required component. In some other embodiments a kit which can be mailed in a letter envelope.