This is a high-fidelity, 1:1 scale replica of the iconic M67 Fragmentation Grenade, featuring the M213 pyrotechnic delay fuze with true thread size. This project was designed from the ground up for the defense-tech community, EOD enthusiasts, and history educators who value mechanical accuracy and visual clarity.

(Will fit surplus springs and strikers M213 Uses true thread size to the real item. Great use for Airsoft also)

Whether you are looking for a museum-quality shelf piece or a functional teaching tool to demonstrate the internal chain of events in a grenade's firing sequence, this model provides an unparalleled look inside.

Mechanical Details & RealismThis isn't just a static shell. The model is designed to be fully interactive for training or display:

Complete Internal Firing Train: The cutaway version exposes the relationship between the striker, striker spring, primer, and the M213 delay column.

Functional Safety Features: Includes a removable safety pin and jungle clip (pull ring and safety clip) to demonstrate the dual-safety protocol.

Precision Geometry: The external baseball sphere is accurately dimensioned to the standard 2.5-inch diameter of the real-world counterpart.

The Cutaway ExperienceThe centerpiece of this listing is the Tactical Cutaway. It provides a 1/4 split of both the body and the fuze assembly.

Visible Components: See exactly how the spring-loaded striker is held back by the safety lever (spoon) and how the internal delay housing sits within the Comp B filler (simulated).

Great for Instruction: Ideal for explaining the 3-5 second delay mechanism without needing specialized equipment.

DISCLAIMERThis is an inert, non-functional training aid. It contains no energetic materials, no pyrotechnics, and no functioning electronics. It cannot be made functional and is intended strictly for display, educational, and simulation use only.

FILE USE POLICYYou may not sell, redistribute, or modify these files for resale. For commercial licensing or custom development, contact:RedwireSolutions.info@gmail.com

3D printing settingsHardware Required: * Standard spring (for striker tension, optional)

Printability: Optimized for FDM and Resin. The fuze threads are modeled with enough tolerance to allow for smooth screwing of the fuze into the body.

Material: PLA (OD Green for the body, Metallic Grey for the fuze).

Infill: 15-20% for the bodyWalls: 2-4

Supports:PETG Interface