Hello Jani! (or maybe Terve??)
I think that you should check in the UK, they have a lot of de-activated firearms there.
The laws in Sweden concerning de-act. is that you still need a permit for it and that you still have to keep it looked up and so on, it's still concidered a firearm.
There was several Japanese manufacturers that made VERY good copies of firearms a few years ago, they are no longer made.
There are a few nice replicas out there but usually they are of poor quality.
I have a Mac-11 made in Spain and it sucks
You might want to check out soft-air guns out, if you just want the look they are very accurate.
Feel free to contact me if there are any other questions, i feel that i might be going on rambling here for quite some time...
Be well!/Jonas aka 2Sharp
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"May all your detonations be expected"
The coolest bar in the world:
http://www.geocities.com/Pentagon/Camp/8373/index.html