AR-15 Upper Receiver Conversion Kit for Pump-Action Rifle
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Solution Overview
Problem
Existing owners of AR-platform semi-automatic rifles face the challenge of converting their firearms to pump-action rifles without incurring significant expense or requiring professional assistance, as current solutions involve purchasing new rifles with unique parts, rather than allowing for easy conversion or reversal.
Innovation Solution
A kit of parts and modifications that allow a semi-automatic AR-platform rifle to be converted into a pump-action firearm, including a push rod, modified gas block, guide rail, and aft support, which can be installed by the owner without professional help, and can be easily converted back to semi-automatic configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing owners purchase new pump-action rifles to comply with restrictions, then they achieve legal compliance and pump-action functionality, but they incur significant expense and cannot utilize their existing AR-15 parts
Solution Approach 1:
The conversion system is divided into separate, interchangeable components: a pump-action conversion kit that can be installed on existing AR-15 lower receivers, allowing the upper receiver assembly to be swapped between semi-automatic and pump-action configurations. This segmentation enables owners to maintain their base platform while adapting the firearm type as needed.
Solution Approach 2:
The lower receiver assembly is designed to be universal, capable of hosting both semi-automatic upper receivers and pump-action conversion kits. This multi-functionality allows a single lower receiver to support multiple firearm configurations, eliminating the need to purchase entirely new rifles when switching between semi-automatic and pump-action modes.
2Ease of manufacture
If owners convert their semi-automatic rifles to pump-action, then they reduce expense and utilize existing parts, but they require professional gunsmith assistance and significant time investment
Solution Approach 1:
The pump-action conversion kit is pre-assembled with all necessary components (pump handle, push rod, gas block, guide rail) prepared and organized for installation. This preliminary preparation allows owners to perform the conversion themselves using basic tools, eliminating the need to source individual parts or require professional gunsmith assistance.
Solution Approach 2:
The conversion kit serves as an intermediary solution between the owner's existing AR-15 platform and the desired pump-action functionality. The kit includes all intermediate components needed for conversion (adapter plates, mounting hardware, guide rails) that bridge the gap between the original semi-automatic configuration and the new pump-action operation, making the conversion process straightforward and tool-friendly.
3Reliability
If owners purchase dedicated pump-action rifles like Troy or Remington models, then they achieve reliable pump-action operation, but they must buy entirely new rifles with unique parts incompatible with standard AR-15 components
Solution Approach 1:
The conversion kit is designed to maintain compatibility with standard AR-15 parts and accessories. The lower receiver, magazine well, and control mechanisms remain unchanged and compatible with traditional AR-15 components, while the pump-action upper assembly interfaces with these standard elements. This universality allows owners to retain their existing AR-15 magazines, sights, and other accessories.
Solution Approach 2:
The pump-action conversion is implemented as a separate, modular upper receiver assembly that can be independently installed and removed. This segmentation maintains the integrity of the standard AR-15 lower receiver and its ecosystem of compatible parts, while adding pump-action functionality through the convertible upper assembly. Owners can swap between semi-automatic and pump-action uppers without affecting the compatibility of their lower receiver components.
Data Source
AI summary
The invention comprises various minimal modifications to the upper receiver assembly of an AR-platform semiautomatic firearm whereby the firearm is reversibly converted to a pump-action firearm. The modifications comprise a means to introduce a push rod which passes through the front end of the upper receiver and connects a pump hand grip and the bolt carrier group of the firearm. The pump hand grip is guided and supported by the barrel and by a secondary guide rail disposed above the barrel.