We had those in Vietnam at the gates of some of the bases. It's a
'clearing' station. A place to point the weapon after dropping the
magazine and ejecting a chambered round - then pulling the trigger
while pointing the gun into the clearing station. Every so often
someone would forget to eject the round in the chamber. The ensuing
'bang' would get everyone's attention - if nothing else just to see
how red the guy's face would get.
They had a round go in those barrels at the prisons occasionally too.
These are cops so it is a little scary. Where do they usually load
their guns?
Don't know where the cops loaded theirs, but if we were riding around
the countryside we had everything loaded.
glock 18c
Threaded Mode
