This is a modernized and highly accurate CAD reconstruction of the MP5A3, based on publicly available Heckler & Koch (H&K) blueprints, reverse engineering of physical components, and detailed reference analysis.

This model is provided for educational, engineering, and design reference purposes. It aims to be the most precise and complete representation currently available, enabling other designers, engineers, and enthusiasts to study, analyze, and modify the MP5A3's mechanical design.

⚠️ This project is intended strictly for educational, research, and referencing purposes. Users are responsible for ensuring compliance with all applicable local laws and regulations.

Notes on Accuracy

While extensive effort has been made to ensure dimensional and geometric fidelity, some parts may still be inaccurate due to gaps in documentation or inaccessible internal specifications. Feedback and collaboration are welcome to improve future revisions.

Disclaimer

• THIS MODEL IS NOT PRINTABLE, and is intended only to be used as a reference in projects.
• No Responsibility for Misuse: These files are for personal, non-commercial use only.

This project is made possible through collaboration between open-source designers, material engineers, and hobbyist testers. Community contributions are critical to refining and validating the design through real-world testing.

Questions or Feedback?

you can find ways to contact me through x.com

LBRY Tags: mp5; firearms; 3dprinting; guns; hk