A buddy has been having lots of interesting interactions with Iranians at church in Norway. He is looking for a source of pepper spray, which is moderately illegal; I don't think he's going to find much.
I'll go way out on a limb here and say if one needs pepper spray to safely attend church services, he just might want to think about doing his praying at home.
I don't think one really needs something that heavy. A framing hammer should do nicely, as they seem to be fairly similar to medieval war hammers.
Like this?
"You can never have too many knives." --Joe Ambercrombie "You don’t really graduate from certain problems or certain things… like you always have to work on trigger control and pulling the trigger straight. " --Ben Stoeger 1/24/2018