Bottom-Loading Magazine for 5.7×28 mm AR-15/M16 Feeding
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Solution Overview
Problem
There is a need for convenient means of bottom-loading 5.7×28 mm and 4.6×30 mm ammunition rounds into the AR-15 and M16 firearm platforms, as existing solutions require bulky top-loading or horizontal-loading magazine arrangements, which are inconvenient and not currently available for these calibers.
Innovation Solution
Development of ammunition magazines that allow for bottom-loading of 5.7×28 mm and 4.6×30 mm rounds into standard AR-15 or M16 upper receivers, featuring a magazine housing with lateral tines and a follower mechanism that stabilizes and aligns the rounds for smooth feeding, along with a floor plate system for easy loading and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If top-loading or horizontal-loading magazine arrangements are used for 5.7×28 mm and 4.6×30 mm rounds, then the ammunition can be loaded into AR-15 or M16 platforms, but the magazine arrangement becomes bulky and inconvenient
Solution Approach 1:
The patent inverts the conventional top-loading approach by implementing bottom-loading for the magazine. The magazine is designed with a bottom plate that can be removed to allow ammunition to be loaded from the bottom, reversing the traditional loading direction. This inversion enables a more compact integration with the AR-15/M16 platform while maintaining ease of operation.
Solution Approach 2:
The magazine design incorporates universal features that allow it to function with both 5.7×28 mm and 4.6×30 mm ammunition types. The magazine body, follower, and spring system are designed to accommodate different caliber rounds through adjustable or interchangeable components, eliminating the need for separate bulky magazine systems for each caliber.
2Adaptability or versatility
If conventional magazine designs are adapted for 5.7×28 mm and 4.6×30 mm rounds, then these calibers can be used in AR-15 or M16 platforms, but the design becomes complex and non-standard
Solution Approach 1:
The magazine is divided into functional segments: a removable bottom plate, a follower assembly, a spring system, and a body. This segmentation allows each component to be optimized independently for handling different calibers while maintaining overall simplicity. The bottom plate can be removed for loading, and the follower can be adjusted for different round types.
Solution Approach 2:
The magazine design utilizes parameter changes to accommodate different calibers. The internal dimensions, follower shape, and spring tension can be adjusted or modified to suit either 5.7×28 mm or 4.6×30 mm rounds. This allows a single basic design to handle multiple calibers without requiring completely different magazine systems.
3Ease of operation
If bottom-loading is implemented for 5.7×28 mm and 4.6×30 mm rounds, then loading convenience is improved and bulk is eliminated, but a new magazine design is required
Solution Approach 1:
The bottom plate is extracted as a separate removable component from the magazine assembly. This allows the main magazine body to be manufactured as a simple, standardized component while the bottom plate serves as a separate loading access point. The extracted bottom plate design simplifies the overall manufacturing process compared to creating an entirely new integrated design.
Solution Approach 2:
The follower assembly and spring system are nested within the magazine body in a compact arrangement. The follower sits within the magazine cavity, with the spring positioned to push the follower upward. This nested configuration allows all necessary components to be housed within a compact volume, achieving bottom-loading functionality without excessive complexity.
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 efficient and convenient loading of ammunition without removing the magazine, improving usability and allowing side-ejection of spent casings through the standard AR-15 or M16 upper receiver.
Implementation Method 1
a spring within the magazine housing, the spring having a top end attached to a magazine follower and bottom end attached to floor plate retainer
Data Source
AI summary
The present disclosure provides ammunition magazines for bottom-loading a 5.7×28 mm ammunition round or a 4.6×30 mm ammunition round into a standard AR-15 or M16 upper receiver.