Modular Trigger System for Striker-Fired Firearms
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Solution Overview
Problem
Striker fired firearms, such as those produced by Glock, Inc., have triggers that are typically mass-produced using injection molding, resulting in high trigger pull weight, significant take-up, and a lack of crispness in the trigger break, which negatively impact user experience and ballistic performance.
Innovation Solution
A modular trigger system comprising a trigger shoe, trigger bar, and sear pack, where the sear pack includes a housing, pin, and a rotatable sear with a spring channel, configured to reduce trigger pull weight and enhance the crispness of the trigger break by controlling the firing pin system through a combination of mechanical engagement and spring-loaded motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mass produced injection molded triggers are used, then manufacturing ease and consistency are improved, but trigger pull weight increases and trigger break crispness deteriorates
Solution Approach 1:
The trigger system is divided into separate modular components: a trigger bar assembly and a sear pack assembly. This segmentation allows each component to be optimized independently for its specific function while maintaining ease of manufacture through modular production and assembly.
2Ease of manufacture
If mass produced injection molded triggers are used, then manufacturing ease is improved, but trigger break crispness deteriorates
Solution Approach 1:
By segmenting the trigger into separate assemblies with distinct functional zones, each component can be manufactured with precision tailored to its specific requirements, then assembled to achieve overall system precision.
Solution Approach 2:
Different regions of the trigger system are designed with locally optimized properties: the sear pack incorporates precision-machined engagement surfaces for crisp break, while the trigger bar uses molded construction for consistency, with selective assembly joining these differently manufactured components.
3Device complexity
If conventional trigger designs are used, then structural simplicity is maintained, but take-up increases
Solution Approach 1:
The trigger bar is designed with a perpendicular sear arm that creates a more direct mechanical linkage to the sear pack, reducing the arc of motion and minimizing take-up while maintaining structural simplicity through the orthogonal geometry.
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 proposed trigger system reduces trigger pull weight, minimizes take-up, and increases the crispness of the trigger break, thereby improving the user experience and ballistic performance of striker fired firearms.
Implementation Method 1
The housing may include a spring channel. The sear pack may further comprise a spring. The spring may be removably installable in the spring channel. The spring may be in operatively engagement with the sear. In this regard, the spring may control the rotatable motion of the sear and retaining arm.
Data Source
AI summary
The trigger may comprise a trigger shoe, a trigger bar, and a sear pack. The trigger bar may comprise an elongate body. The elongate body may comprise a shoe connector. The elongate body may comprise a sear arm. The sear arm may be disposed perpendicularly to the elongate body. The sear pack may be engageable by the trigger bar. The modular seal pack may also be operable by the sear arm. The sear pack may comprise a housing, a pin, and a sear. The sear pack may be installable in the connector. The sear pack may be configured to control or actuate the firing pin system in response to a user actuating the trigger (e.g., firing the striker fired firearm).