What about:

This Contest is open only to legal residents who are at least 18 years of age or older at the time of entry.

No mention of Germany there. Only legal residents of a country and you must be at least 18.

Legal residents of a country. I.e no illegal aliens. You must be a legal resident of a country.

Thanks for the reply. I have one more doubt. If I create any 3D design of the weapon in any CAD software(like solid works), then how am I supposed to know that whether I have been given the permission to create attachments?
And if I have the permission then, where is the posting screen? Am I supposed to post my design here? Won't It be visible to everyone?

Thanks for the reply. I have one more doubt. If I create any 3D design of the weapon in any CAD software(like solid works), then how am I supposed to know that whether I have been given the permission to create attachments?
And if I have the permission then, where is the posting screen? Am I supposed to post my design here? Won't It be visible to everyone?

To my opinion, it is a bad idea to attach files with proprietary format.
You can:
- post renders (images) of your work. - upload a demonstration video to any video service, like youtube or vimeo, and share the link. - upload your model to any service, like sketchfab, for 3D preview.

And yes, it will be public, but it is usual for competitions like this. Have fun!
Just PM me if you need help.

How to participate and where can I upload my image or 3d model?
can I upload a link (ex: sketchfab) as my participation?

Update:
I'm really sorry for the late response, currently I'm abroad, without my computer and so on....
model: VSS Vintorez - suppressed sniper rifle with PS0-1 telescopic sight.
Modeling was done in Maya and in Zbrush, baking and texturing in Substance Painter. Renders are from Marmorset.

https://www.artstation.com/artwork/vXEqY

https://youtu.be/EzxV2dnh-xU

^ ooo very nice

In which software did you create that gun?? It's awesome. How did you get so realistic final image?

" Participants may submit multiple designs" what does this mean?

It means you can submit several entries, but you can only win once.

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I am unable to enter any image or other files associated to my design. What should I do? If I am doing something wrong, please feel free to inform me.

Hey there, what's thew issue when you try to enter?

We suggest you take a screenshot or photo of your entry and upload it on any image hosting site; then link it to us here on the forums.

Let me know if you need any help!

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How to participate and where can I upload my image or 3d model?
can I upload a link (ex: sketchfab) as my participation?

Yes, absolutely! Sketchfab links and screenshots or videos are fine! Just post a link in this thread.

This looks awesome! Please be so kind and also post some details like:

• Make / Model of weapon depicted
• Tools & Software used
• Estimated time
• If applicable: credit third-party work/assets/music

This is going to be interesting for all participants.