Had a long talk with a chap at the Torbay Steam Fair earlier this month. His group do the military thing. They had everything from WWI Lugers to current military equipment, his information is that if it don’t fire, it’s legal, no permit, nothin’.
That said, the rozzers may need to be shown that a firearm is none functional, but you could have a 1:1 scale AK17 with a permanently blocked barrel. Again, common sense says that you don’t wave said weapon around in the local Barclays branch.
I don’t see ME people being interested in something that’s being used in Iraq, but pinfire revolvers or single shot ball and cap dueling pistols would make interesting projects, covering a wide range of processes, casting, heat treatment, rifling, & etc.
Funny, thinking of another thread, but the spellcheck didn’t like “rozzers”.
Ian