1911 Frame Relief and Ambidextrous Slide Stop for Custom Fit

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Solution Overview

Problem

Conventional 1911 handguns have unitary grips and frames that make customization difficult, require unsightly modifications, and are not compatible with certain accessories, affecting functionality and resale value.

Innovation Solution

A modular firearm frame with a recessed socket face and removable finger interface allows for easy addition and removal of accessories without altering the frame, along with a trigger shoe assembly featuring a dovetail design for secure and adjustable engagement, and a magazine catch retainer plate for compatibility with various magazines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a unitary grip and frame are used in conventional 1911 handguns, then the structural integrity and simplicity are maintained, but customization becomes difficult and requires permanent modifications that reduce resale value and may damage components

Engineering Contradiction:

Improvecustomization capabilityVSAvoidframe structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame is divided into a main frame body and a separate removable grip module. The grip module can be detached and replaced without modifying the main frame structure, enabling customization while preserving frame integrity. This segmentation allows users to swap grips for different functions or preferences without permanent alterations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The main frame body is designed with universal mounting interfaces and attachment mechanisms that can accommodate various grip modules and accessories. This universal design allows a single frame to support multiple configurations and accessories, enhancing versatility without requiring frame modifications for each accessory.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If accessories are mounted on conventional 1911 handguns, then functionality is enhanced, but unsightly modifications are required that reduce resale value and may cause functional problems

Engineering Contradiction:

Improveaccessory compatibilityVSAvoidframe modification

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The frame is pre-equipped with mounting interfaces, attachment points, and mechanical coupling mechanisms during manufacturing. These preliminary preparations enable accessories to be attached later without requiring unsightly field modifications, preserving both aesthetics and resale value while maintaining structural integrity.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If conventional slide stop designs are used, then the simplicity and reliability are maintained, but ambidextrous operation and customization are limited

Engineering Contradiction:

Improveambidextrous capabilityVSAvoidslide stop mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The slide stop is designed with movable components and adjustable positioning mechanisms that allow it to be configured for different operating hands. The dynamic design enables the slide stop to adapt between left-handed and right-handed operation modes, providing ambidextrous capability while maintaining mechanical reliability through proven movement principles.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12535295B2Firearms with an ambidextrous slide stop and/or relief

Publication Date: 2026.01.27 OA DEFENSE LLC

AI summary

The application pertains to 1911 style firearms. In some embodiments, the firearm frame comprises a relief to capture debris. In some embodiments, the firearm has an ambidextrous slide stop.