Bolt Action Upper Receiver for AR Rifle Conversion
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Solution Overview
Problem
Rifle sportsmen often need multiple guns to accommodate different types and calibers, which is inconvenient and costly.
Innovation Solution
A bolt action upper receiver assembly that can be coupled with a standard AR lower receiver, allowing conversion of an AR rifle into a bolt action rifle, enabling use of various calibers with a single lower receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rifle is designed for a single type and caliber, then the structural design is simple and reliable, but the rifle cannot be used for different types and calibers
Solution Approach 1:
The rifle system is divided into two main segments: a standardized lower receiver assembly and an interchangeable upper receiver assembly. The upper receiver can be removed and replaced to change calibers and rifle types, while the lower receiver remains constant. This segmentation allows versatility through component interchangeability without requiring complete redesign of the entire rifle system.
Solution Approach 2:
The lower receiver assembly is designed with universal compatibility to work with multiple types of upper receiver assemblies. The pivot pin connection system and standardized interface allow a single lower receiver to support various upper receivers configured for different calibers and rifle types (bullpup, traditional, etc.), making the lower receiver a universal base platform.
2Adaptability or versatility
If multiple guns are purchased for different types and calibers, then each gun is optimized for its specific purpose, but the cost and convenience are reduced
Solution Approach 1:
Instead of requiring separate firearms for different purposes, this invention creates a universal lower receiver that can accommodate multiple upper receiver assemblies. Users can own one lower receiver and interchange upper receivers to access different rifle configurations and calibers, reducing the total number of firearms needed while maintaining specialized performance for each configuration.
Solution Approach 2:
The rifle system transitions from a static, single-purpose configuration to a dynamic, multi-purpose system. The ability to quickly swap upper receiver assemblies allows the rifle system to adapt its configuration based on shooting needs, transforming a single firearm into a family of firearms with different capabilities.
3Adaptability or versatility
If a bolt action upper receiver is coupled to a standard AR lower receiver, then versatility is achieved, but the manufacturing precision and assembly complexity increase
Solution Approach 1:
The pivot pin connection system acts as an intermediary mechanism that bridges the bolt action upper receiver and the standard AR lower receiver. This intermediary connection method provides precise alignment and secure attachment while accommodating minor variations in manufacturing tolerances, enabling platform compatibility without requiring extremely tight manufacturing precision.
Solution Approach 2:
The interface between upper and lower receivers is designed as a segmented connection system using pivot pins and standardized mounting points. This segmented approach allows each component to be manufactured independently with standard tolerances, then assembled together through the pivot pin mechanism, reducing the need for high-precision integrated manufacturing.
Data Source
AI summary
A bolt action AR rifle can be prepared using a standard AR lower assembly and coupling it to a bolt action upper assembly. The bolt action upper assembly has a bolt action receiver containing a bolt. The method of forming a bolt action AR rifle can include: providing the bolt action upper receiver assembly; providing the standard AR lower AR receiver assembly having a pivot pin and takedown pin; inserting the pivot pin into the pivot pin receiver hole; pivoting the bolt action upper receiver assembly at the pivot pin until the takedown pin is aligned with the takedown pin receiver hole; and inserting the takedown pin into the takedown pin receiver hole.