Drop-in Full Automatic Trigger Group Conversion
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Solution Overview
Problem
Conventional full-automatic trigger group maintenance is time-consuming and error-prone, requiring disassembly and precise drilling, which can be dangerous and inefficient, especially in law enforcement and military settings.
Innovation Solution
A drop-in full automatic trigger group with a housing defined by collinear pin holes allows for quick installation and conversion of semi-automatic firearms to full automatic operation, eliminating the need for precise drilling and reducing maintenance time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional full-automatic trigger group maintenance is performed through disassembly and precise drilling, then the trigger group can be maintained and converted, but the process is time-consuming and error-prone
Solution Approach 1:
The trigger group is divided into modular components (trigger assembly, hammer assembly, sear assembly, selector switch assembly) that can be independently maintained and replaced. The housing contains pre-defined collinear pin holes that segment the assembly points, allowing quick reassembly without precise drilling.
Solution Approach 2:
The housing is pre-manufactured with collinear pin holes at the correct locations before assembly. This preliminary action eliminates the need for field drilling and ensures accurate alignment of trigger group components during maintenance or conversion operations.
2Manufacturing precision
If precise drilling is performed for trigger group installation, then accurate component alignment is achieved, but the risk of drilling errors and safety hazards increases
Solution Approach 1:
The collinear pin holes are pre-drilled and precision-machined into the housing during manufacturing under controlled conditions. This eliminates the need for field drilling operations that are prone to errors and safety hazards, while ensuring accurate component alignment.
Solution Approach 2:
The housing acts as an intermediary component that contains the pre-defined pin holes. Instead of drilling directly into the lower receiver or aligning components through field drilling, the housing serves as a pre-prepared carrier that ensures accurate alignment through its manufactured collinear holes.
3Ease of operation
If conventional trigger group assembly methods are used, then components can be assembled, but the process requires special skills and is prone to errors
Solution Approach 1:
The trigger group is segmented into distinct assemblies (trigger, hammer, sear, selector switch) that can be independently worked on and then quickly combined in the housing. This modular segmentation simplifies maintenance procedures while the pre-defined pin holes provide clear assembly guidance.
Solution Approach 2:
The housing serves as an intermediary assembly platform that guides component placement through its collinear pin holes. This intermediary structure simplifies the assembly process by providing pre-defined alignment features, reducing the skill level required while maintaining assembly accuracy.
Data Source
AI summary
Described herein are examples of drop-in full automatic trigger groups. A drop-in full automatic trigger group may be configured for installation within a lower receiver of a firearm. The trigger group may a housing defined by a first trigger pin hole, a first hammer pin hole, and a first sear pin hole; a second trigger pin hole substantially collinear with the first trigger pin hole, a second hammer pin hole substantially collinear with the first hammer pin hole, and a second sear pin hole substantially collinear with the first sear pin hole. The trigger group may include a trigger mechanism disposed at least partially within the housing. The trigger group may include a hammer mechanism disposed at least partially within the housing. The trigger group may include a sear mechanism disposed at least partially within the housing.