Firearm Magazine Follower With Split Flange for Slide Lock Activation
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Solution Overview
Problem
Existing firearm magazine followers with a low profile design face issues such as reduced slide lock reliability and difficulty in full magazine insertion when empty, due to their pivoting action over the magazine housing edge, which compromises the transfer of spring force and causes the follower to 'jump' the slide lock lever, and limits the size of the magazine spring.
Innovation Solution
A firearm magazine follower made of thin, strong spring-like material with a split lower flange and a raised member at the distal end, allowing for improved angle adjustment within the magazine housing, preventing pivot over the top edge, and enabling direct contact with the slide lock lever for enhanced force transfer, along with spacer flanges for smooth operation and increased spring capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a low profile follower design is used to maximize bullet storage and spring space, then the magazine capacity and spring size are increased, but the slide lock reliability is reduced due to pivot action
Solution Approach 1:
The follower is segmented into multiple functional areas: a low profile main body for maximizing storage space, a specifically shaped slide lock step with rounded edges for reliable lever contact, and a reinforced structure at the pivot point. This segmentation allows each area to optimize its function without compromising overall performance.
Solution Approach 2:
The follower employs local quality enhancement by rounding the edges of the slide lock step contact surface to prevent jumping and improve reliability in the critical slide lock activation area, while maintaining the low profile geometry in the bullet storage areas. The material thickness is also varied locally, being thicker at the slide lock step and pivot points for strength while remaining thin in storage areas.
2Reliability
If the follower pivots over the magazine housing edge to activate slide lock, then the slide lock is activated, but the spring force transfer is reduced and insertion is prevented when empty
Solution Approach 1:
The follower is designed with a rounded slide lock step that makes preliminary contact with the slide lock lever before the magazine is fully inserted. This preliminary action ensures proper alignment and gradual force transfer, preventing the follower from jumping over the lever while maintaining reliable activation. The rounded geometry allows smooth transition from insertion to locked position.
Solution Approach 2:
The slide lock step contact surface is curved rather than flat, creating a rounded interface with the slide lock lever. This curvature allows the follower to roll into contact with the lever smoothly during insertion, improving force transfer efficiency and preventing the jumping action that occurs with flat edges. The curved geometry also facilitates proper alignment during the activation process.
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
The solution ensures reliable slide lock activation, maximizes storage capacity, and allows for full magazine insertion even when empty, by maintaining consistent contact with the slide lock lever and preventing follower binding, thereby enhancing the overall performance of the firearm magazine.
Implementation Method 1
The follower is made of a thin, strong spring-like material
Implementation Method 2
the magazine spring forces the follower up to keep the next bullet located at the top of the magazine
Data Source
AI summary
A firearm magazine follower for use in combination with a magazine tube includes an upper flange, a rear flange and a bottom flange formed from a single, flexible piece of material, such as steel. The upper flange extends from the rear flange and has a top side that is sized and configured for supporting a plurality of bullets thereon. The lower flange extends from the rear flange and has a distal end and a proximal end, and includes first and second surface members are separated lengthwise at a location between the proximal and distal ends of the lower flange. The first surface member is sized and configured for contacting a front inner facing wall of the magazine tube. The second surface member includes a raised flange at the distal end that is sized and configured for contacting and activating the slide lock lever of the magazine tube.