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I'll make sure to keep things legal, but I should inform you that, as I'm currently in the US, there are things I can do that are illegal most other countries. I'll add a disclaimer to "check your local laws before proceeding," or something like that, if I'm doing anything that's at all questionable.

That's a good idea, the disclaimer. I don't think it really matters as laws across countries vary in many instances, not just firearms...But it pays to be cautious. A disclaimer is a very good idea. ✅