The opener came from the craft store for $6.00. At first I tried to solder the opener onto the shell but it began to melt. Next I tried the type of glue you have to use with a little water moisture to get it to set. That came right apart. Finally I got some two part epoxy paste. You mix them together 1:1 and it sets over night. I had this stuff laying around from a past project but I think I paid around $13.00 for it.
To get a sense for how big this shell really is I took pictures of it next to a 9mm hand gun shell.