Rail Gun

3D printed heavy armament prop - July 2026

3D model of a futuristic weapon with a scope and mechanical design elements against a dark background.

A 1:1 full-scale replica of the Rail Gun found in the Metal Gear Solid Series, engineered for easy disassembly and transport, with dynamic linear actuation and embedded audio playback.

Modular Frame

A load-bearing internal skeleton was designed using 2020 and 2040 V-slot aluminium extrusions. The frame allows the 1.8m long model to break down into compact sections for transport, and reassembled on-site.

Linear Actuation

A belt-driven linear slide was made using a NEMA 17 stepper motor, GT2 belt and V wheels, similar to those found in 3D printers—achieving a smooth, rapid actuation of the front barrel.

Embedded Audio

A dual-trigger audio system was developed using microswitches and programmable microcontrollers to synchronise barrel actuation and weapon fire with game-accurate audio effects.

Tools used:

Materials and components used: