That’s some neat work right thar. Not sure how one shops for a big enough chunk of meteor to make a pistol out of. There was King Tut’s dagger which seems to be meteor? But it’s one-piece, maybe not mechanical? They didn’t mention whether they doped out the chemistry of the rock but they mentioned it was a bit soft. Most that I’ve read about are heckuva hard.
They got fragments available from a huge NiFe meteor fall in Africa (Namibia). You can probably find pieces for sale online.
https://en.wikipedia.org/wiki/Gibeon_(meteorite)