Magazine Conversion System with Wedge Spacers

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Solution Overview

Problem

Existing magazine conversion systems for rifles, such as the AR15/M4, face challenges in accommodating different calibers without compromising the operational efficiency and magazine compatibility.

Innovation Solution

A magazine conversion system comprising a front spacer with a wedge-shaped main body and a rear spacer with an ejector element, positioned within the magazine well, along with an optional magazine jig to form a magazine catch notch, which reduces the magazine well size to accommodate smaller magazines for various calibers, ensuring secure positioning and efficient round feeding and ejection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conversion block is used to reduce magazine well size, then smaller magazines can be accommodated, but the structural complexity of the system increases

Engineering Contradiction:

Improvecaliber compatibilityVSAvoidconversion system structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The conversion system is divided into separate functional components: a front spacer with feed ramp, a rear spacer with ejector element, and optional magazine jigs. This segmentation allows each component to perform its specific function independently while collectively achieving caliber conversion, reducing overall structural complexity compared to a monolithic conversion block.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The spacers act as intermediary elements between the existing magazine well and the smaller magazine. These spacers with integrated feed ramps and ejector elements serve as mediators that adapt the original well geometry to accommodate different caliber magazines without requiring complete well replacement.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the magazine well size is reduced, then smaller magazines fit properly, but magazine retention and positioning stability may be compromised

Engineering Contradiction:

Improvemagazine size accommodationVSAvoidmagazine retention

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The front and rear spacers are pre-configured with specific geometries including feed ramps and ejector elements that are formed as integral parts of the spacers. This preliminary configuration ensures proper magazine positioning and retention before the magazine is inserted, maintaining reliability while accommodating smaller magazines.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The spacers provide localized structural modifications at specific positions within the magazine well. The front spacer modifies the front area with its feed ramp, while the rear spacer modifies the rear area with its ejector element, creating localized quality changes that collectively ensure proper magazine retention without requiring complete well redesign.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10260827B2Magazine conversion system and magazine jig

Publication Date: 2019.04.16 MOCK JARRET CHRISTIAN

AI summary

A magazine conversion system mounts within a magazine well of a lower receiver, and includes a front spacer having a wedge-shaped main body with a lower end, and an upper end having a feed ramp extending upwardly therefrom; and a rear spacer having a wedge-shaped main portion with a lower portion and an upper portion having an ejector element extending upwardly therefrom. With the front and rear spacers positioned within the magazine well, at least a portion of the feed ramp and at least part of the ejector element are positioned above the magazine well.