For areas of importance in civilian areas where armed guards are necessary (banks, etc), why not implement guard booths with one way bullet-resistant glass and shooting slits. I've never seen this done in any large scale use.
>dumb frogposter
>>34887681
Why not have remotely operated camera and gun mounts instead?
Smaller target for counterfire, less expensive in long term, provides video footage of shooting to help with legality of usage, etc.