Manual Carriage Kit for Semi-Automatic Weapon Conversion
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Solution Overview
Problem
Semi-automatic weapons with features mimicking military rifles are subject to regulatory concerns and potential bans, necessitating a modification to comply with existing or changing laws, specifically converting them into manually cycled weapons to avoid semi-automatic operation.
Innovation Solution
A method and kit that replace the gas tube with a carriage and pushrod system, allowing manual reciprocation of the bolt carrier, eliminating the need for a gas tube and enabling manual cycling of the weapon, which includes modifying the bolt carrier key to accept a pushrod and using a cylindrical carriage to encircle the barrel, along with a modified hand guard and latch mechanism for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gas tube is removed and replaced with a manual reciprocation system, then the weapon complies with regulatory standards by eliminating semi-automatic operation, but the ease of operation deteriorates as manual cycling is required after each shot
Solution Approach 1:
The gas tube, which enables semi-automatic operation, is extracted and removed from the weapon system. This extraction eliminates the automatic cycling mechanism, forcing manual operation and thereby achieving regulatory compliance while resolving the contradiction between reliability (compliance) and ease of operation
Solution Approach 2:
The automatic gas-driven reciprocation mechanism is inverted to a manual reciprocation system. Instead of gas pressure automatically cycling the bolt carrier, the user manually reciprocates the carriage which then moves the pushrod to cycle the bolt carrier, thus inverting the automation direction to achieve compliance
2Reliability
If the bolt carrier reciprocation is changed from gas-driven to manual, then semi-automatic features are eliminated to meet legal requirements, but the productivity deteriorates due to slower reloading speed
Solution Approach 1:
The pushrod serves as an intermediary mechanical element that transfers motion from the manually reciprocated carriage to the bolt carrier. This intermediary mechanism allows reliable manual cycling while maintaining efficient power transmission, thus addressing the contradiction between regulatory compliance and productivity by enabling fast manual operation
Solution Approach 2:
The reciprocation system is segmented into distinct components: the carriage that the user directly manipulates, the pushrod that transfers motion, and the bolt carrier that cycles the ammunition. This segmentation allows each component to be optimized for its specific function, maintaining productivity through efficient mechanical leverage while ensuring compliance through manual operation
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
Effectively converts semi-automatic weapons into manually cycled weapons, ensuring compliance with regulatory standards by requiring manual reloading after each shot, thereby avoiding semi-automatic operation and potential legal issues.
Implementation Method 1
a pushing member connecting between the carriage and the bolt carrier
Data Source
AI summary
Semi-automatic features can be eliminated from a weapon that originally had a bolt carrier that was reciprocated by a gas tube communicating with a barrel. After eliminating the gas tube, a carriage and pushing member can be taken from a kit and installed on the weapon. The carriage is reciprocatably mounted at the barrel forward of the bolt carrier, with the pushing member connecting between the carriage and the bolt carrier. The carriage can be manually reciprocated to reciprocate the push member and the bolt carrier.