Self-Tightening Lower Receiver Vise Block for Multi-Caliber Fit

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Solution Overview

Problem

Existing vise blocks for firearm lower receivers are limited to specific calibers and require separate sleeves or risk damaging magwells with adjustable handles, lacking an all-in-one solution with a self-tightening function.

Innovation Solution

A multi-caliber self-tightening vise block with a main body, polymer levers, and an affixing assembly that allows for secure fitting and locking of different caliber lower receivers without additional tools, using polymer levers and an affixing pin for pivotally coupling and squeezing against the receiver.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional vise block is designed for a specific caliber, then it provides secure fitting for that caliber, but it cannot be used with other calibers requiring separate sleeves

Engineering Contradiction:

Improvecaliber compatibilityVSAvoidnumber of separate components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The vise block incorporates a multi-caliber configuration with a body that can accommodate different caliber lower receivers without requiring separate sleeves. The receiver engagement surface is designed with a multi-caliber configuration that allows the same vise block to securely fit multiple caliber receivers, eliminating the need for multiple separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the function of multiple caliber-specific vise blocks into a single multi-caliber vise block. The body integrates multiple receiver engagement surfaces corresponding to different calibers, combining what would traditionally require separate vise blocks or sleeves into one unified device.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If an adjustable handle is used to expand the block body for fitting different magwells, then it can accommodate various magwell sizes, but it may eventually damage the magwells

Engineering Contradiction:

Improvemagwell compatibilityVSAvoidmagwell damage

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The vise block employs a resilient body made of elastomeric material that can dynamically adapt to different magwell sizes through elastic deformation. The body compresses and flexes to accommodate varying magwell dimensions, eliminating the need for rigid adjustment mechanisms that could damage the magwells.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the physical state of the body from rigid to resilient/elastomeric, allowing it to deform elastically to fit different magwell sizes. This material parameter change enables the body to accommodate various magwell configurations without applying excessive force that could cause damage.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If a resilient body made of elastomeric material is used, then it can elastically deform to fit different magwell sizes, but it reduces the structural rigidity needed for secure clamping

Engineering Contradiction:

Improvemagwell size accommodationVSAvoidclamping force

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The vise block utilizes a composite structure combining elastomeric material for the resilient body with reinforced polymer levers and metal affixing pins. The elastomeric body provides adaptability while the reinforced polymer and metal components provide the necessary structural rigidity and clamping force, creating a balanced composite material solution.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent segments the vise block into distinct functional components: a resilient elastomeric body for adaptation, reinforced polymer levers for structural support and force application, and metal affixing pins for secure attachment. Each segment performs its specific function optimally while working together as an integrated system.

Inventive Principle:

Principle #1Segmentation

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 secure and tool-free attachment of multiple caliber firearm lower receivers, preventing damage to magwells and eliminating the need for multiple vise-block sleeves.

Implementation Method 1

The vise block may have a resilient body made of an elastomeric material that is capable of elastically deforming to fit different magwell sizes and configurations

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The affixing assembly may comprise a first polymer lever, a second polymer lever, and an affixing pin configured to pivotally couple the first polymer lever with the second polymer lever on the main body

Methodology Applied

Scientific EffectLever mechanism: Lever

Data Source

PatentUS20250367790A1Multi-caliber self-tightening lower receiver vise block

Publication Date: 2025.12.04 STRIKE IP LLC

AI summary

A multi-caliber self-tightening vise block for a lower receiver of a firearm includes a main body having a first section, a second section integrally extended from the first section, a middle portion formed between the first section and the second section, and an opening cavity formed on the middle portion; and an affixing assembly pivotally coupled with the main body; wherein the affixing assembly includes a first polymer lever, a second polymer lever, and an affixing pin configured to pivotally coupled the first polymer lever with the second polymer lever on the main body.