Modular Firearm Receiver for Caliber and Magazine Conversion
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Solution Overview
Problem
Current submachine guns and their semi-automatic counterparts lack caliber and magazine interchangeability, requiring special gunsmith skills for conversion and limiting logistical flexibility for users.
Innovation Solution
A modular firearm design with a monolithic main body and interchangeable components, allowing users to convert between different ammunition types and magazine configurations without specialized tools, featuring a monolithic main body, interchangeable breech bolt and barrel structures, and adaptable magazine adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional submachine gun designs are used, then structural simplicity and ease of manufacture are maintained, but caliber and magazine interchangeability are limited requiring special gunsmith skills
Solution Approach 1:
The firearm is divided into modular components including a main body, interchangeable breech bolt structures, interchangeable barrels, and magazine adapters. This segmentation allows users to convert between calibers and magazine types by simply swapping these standardized components without requiring special gunsmith skills, directly resolving the contradiction between adaptability and complexity.
2Ease of operation
If specialized gunsmith skills are required for conversion, then conversion precision and reliability are improved, but ease of operation and accessibility are reduced
Solution Approach 1:
The main body is designed with universal interfaces that can accommodate multiple breech bolt structures, barrels, and magazine adapters through standardized mounting mechanisms. This universality enables any user to perform conversions by simply attaching the appropriate components, ensuring both ease of operation and reliability through consistent, repeatable interfaces that do not require specialized skills.
3Ease of manufacture
If modular interchangeable components are implemented, then adaptability and ease of conversion are improved, but manufacturing complexity and costs increase
Solution Approach 1:
The breech bolt structures and barrels are designed with standardized parameters including uniform mounting hole patterns, consistent flange dimensions, and interchangeable locking mechanisms. These parameter standardizations allow different caliber components to be manufactured using the same base templates and tooling, simplifying production despite the increased number of interchangeable parts.
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
Enables users to easily switch between ammunition types and magazine configurations, reducing manufacturing costs and simplifying production while maintaining operational safety and reliability.
Implementation Method 1
the breech bolt is released to travel into the counter recoil position (i.e., battery position) under the stored energy of a compressed recoil spring
Implementation Method 2
the breech bolt structure is released to travel into the counter-recoil position under the stored energy of a compressed buffer spring
Data Source
AI summary
A firearm as disclosures herein comprises a main receiver body, a barrel, a breech bolt structure, a buffer assembly, a trigger group assembly, a bolt catch and at least one of an auto-sear, a magazine adapter and a breech bolt anti-rotation structure. The main receiver body is preferably of a monolithic construction whereby the handguard and breech bolt carrying bore can be manufactured from a single piece of material. The auto-sear is tripped by engagement with a buffer of the buffer assembly. The magazine adapter has an exterior surface structure engaged with a mating interior surface structure of a magazine well space of the main receiver body. A distal end portion of the breech bolt anti-rotation structure is engageable by the buffer for limiting forward travel of the buffer when the barrel is detached from the main receiver body.