40mm Flare Round – Milsim Signal Launcher Adapter

🔥 40mm Flare Round Shell – Milsim Signal Launcher Adapter

This is a 40mm shell-style adapter designed to simulate a military-style flare round for use in airsoft or milsim scenarios. The inner cavity is made to snugly hold a standard consumer firework (like a comet or small flare), while the outer diameter fits inside most airsoft 40mm grenade launchers. 

Purpose:
When used responsibly, this adapter allows players to simulate launching signal flares or illumination rounds during night ops or objective-based milsim games. It brings extra immersion and realism to your scenario loadouts.

• Outer diameter: 40mm
• Inner diameter (firework chamber): 24mm
• Length: 100mm
• Designed for FDM 3D printing (PLA or PETG recommended)
• Print solid for structural strength

The shell is intentionally made slightly smaller than a typical 40mm round to ensure broad compatibility across different launchers. If the fit is too loose, simply add a single wrap of duct tape  around the base for a snug and secure fit.

⚠️ Use with caution!
Only use outdoors and in accordance with local laws and event safety guidelines. Never aim at people or animals. Always insert the firework securely and ensure the launcher is stable before ignition.

This is my very first 3D model, so I'm excited (and a little nervous) to share it! If you print it, use it in a game, or have any questions – I’d love to hear from you. Feel free to leave a comment or send me a message. And if you like the model, a boost would mean a lot!