Unfinished Firearm Frame with Restriction Protrusions and Jig
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Solution Overview
Problem
Individuals interested in customizing firearms often face challenges in machining firearm parts without access to machine shops or necessary skills, and existing laws restrict the sale and transfer of unfinished firearm frames, requiring complex registration and serialization processes.
Innovation Solution
An unfinished firearm frame designed with specific restriction protrusions and a jig system that allows users to complete the frame by drilling pin holes and removing obstruction features, enabling assembly of firearm parts without violating federal regulations, while remaining under the '80% completion' threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a firearm frame is completed to more than 80% completion, then the frame can be fully assembled and used, but the frame requires registration and serialization under federal law
Solution Approach 1:
The patent applies partial action by intentionally leaving the frame at approximately 80% completion with deliberate restriction protrusions that prevent full assembly. This partial completion status allows the frame to be manufactured and sold without triggering federal registration and serialization requirements, while still providing a functional base for customization.
2Ease of manufacture
If restriction protrusions are added to prevent slide assembly, then the frame remains under 80% completion threshold, but the frame cannot be fully assembled
Solution Approach 1:
The restriction protrusions are pre-installed on the frame during manufacturing to prevent slide assembly and maintain 80% completion status. These protrusions serve as preliminary barriers that legally protect the manufacturer while still allowing the frame to be sold and customized. The user can later remove these protrusions themselves to complete assembly, maintaining the legal distinction.
3Ease of operation
If a jig system is provided to guide removal of restriction protrusions, then users can complete assembly, but the device complexity increases
Solution Approach 1:
The jig system acts as an intermediary tool that guides the user through the process of removing restriction protrusions and completing assembly. The jig includes pin hole guides that align drilling operations and removal guides that direct tool paths, making the complex task of modifying the frame accessible to users without extensive machining expertise.
4Adaptability or versatility
If users machine firearm parts without machine shop access, then customization is possible, but manufacturing precision deteriorates
Solution Approach 1:
The frame is pre-manufactured with precision features including pin hole locations, restriction protrusion positions, and jig alignment features. This preliminary precision work is performed by manufacturers with proper machine shops, ensuring accurate dimensions and proper fit. Users then use the provided jig system to complete assembly, maintaining precision without requiring advanced machining skills.
Data Source
AI summary
An unfinished firearm frame having a top adapted to receive a slide. Where rear restriction protrusions extend from the top of the frame near a rear of the frame which restricts addition of the slide to the frame and front restriction protrusions extend from the top of the frame and forward of the at least one rear restriction protrusion which restricts addition of the slide to the frame. Where there is a recoil assembly block adapted to prevent a recoil assembly from being assembled into the frame. A jig having a right side and a left side to receive and clamp the frame. The jig including three pin hole guides, a removal guide edge for each of the at least one rear restriction protrusion and the at least one front restriction protrusion and a recoil assembly cutout to allow a tool to pass to the recoil assembly block.