I have Walter target pistol as well!We have a Kimber custom II 1911 chambered and 45 ACP; a Ruger P93DC 9 mm; the Glock is a G21. Now, that info came from DH; all I know is how to load and shoot, LOL!
And I see you are a fellow Bostonian....very cool (even though I have relocated, lol).
We had better ditch this discussion before we scare everyone else!