Magazine Base Pad Assembly with Removable Metal Insert
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Solution Overview
Problem
Existing firearm magazines with empty rounds lack sufficient weight to optimally fall away from the firearm, leading to increased friction and potential wear on the magazine body when using aftermarket metal base pads, which can be costly and reduce the magazine's lifespan.
Innovation Solution
A modularized durable polymer magazine base pad with a removable metal insert or overmolded metal core, providing the necessary weight for optimal fall away without causing wear, and featuring a self-retaining design without additional fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a metal base pad is used to increase weight, then the magazine falls away more effectively, but the metal base pad causes wear on the magazine body
Solution Approach 1:
The base pad is divided into two separate components: a polymer base pad body and a removable metal weight insert. This segmentation allows the weight function to be provided by the metal insert while the polymer body interfaces with the magazine body without causing wear. The metal insert can be removed or replaced independently, preventing permanent damage to the magazine body.
Solution Approach 2:
The polymer base pad body acts as an intermediary between the metal weight insert and the magazine body. Instead of the metal insert directly contacting the magazine body (which causes wear), the polymer material serves as a protective mediator that transmits the weight benefit while eliminating the harmful wear effect.
2Object-affected harmful factors
If a removable metal insert is used, then wear on magazine body is reduced, but the device complexity increases
Solution Approach 1:
The metal weight insert and polymer base pad body are combined into a single integrated assembly that functions as one component. The metal insert is retained within the polymer body through the elastic bias of the magazine feed spring, eliminating the need for separate fasteners or attachment mechanisms. This merging reduces complexity compared to having entirely separate components requiring additional assembly steps.
Solution Approach 2:
The magazine feed spring's elastic bias automatically retains the metal weight insert within the polymer base pad body. This self-retaining mechanism eliminates the need for additional fasteners, clips, or attachment devices, allowing the assembly to service itself through the existing spring mechanism rather than requiring separate retention systems.
3Reliability
If additional fasteners are added to secure the metal insert, then the insert is more securely retained, but the ease of manufacture decreases
Solution Approach 1:
The magazine feed spring's elastic bias automatically retains the metal weight insert within the polymer base pad body. This self-retaining mechanism eliminates the need for additional fasteners, clips, or attachment devices, allowing the assembly to service itself through the existing spring mechanism rather than requiring separate retention systems.
Data Source
AI summary
Some embodiments may include a firearm magazine base pad assembly or magazine extension assembly comprising a top, a bottom, and a cavity between the top and bottom, the cavity for a core or removable insert, the firearm magazine base pad assembly or magazine extension assembly further comprising: means for slidingly receiving a bottom of a magazine, the slidingly receiving means including a channel to receive a lip defined by the bottom of the magazine and tab slots to mate with tabs above the lip; and the core or removable insert located in the cavity. Other embodiments may be disclosed and/or claimed.