Just re-read the whole string referenced by Frosty Price - - -
- - - and there were mentions of times when Barney used a Thompson to guard an armored car. Also some discussion of other long guns in the series. One I particularly recall was when Shurf Andy was walking along a dirt road with a scope-sighted bolt action rifle.
Does ANYONE recall ever seeing Andy with a sidearm?
It was the old Border Patrol type rig, same thing Barney carries. As I recall, the weapon was already in the rig, I think he pulled it out of his desk, the belt was wrapped around the holster, but I can't swear to that.
Anyway the episode where the prisoners escaped and were coming for Barney. The one where he's in the barn, and Andy captures the guy but let's Barney think he did it. I thought I recall seeing Andy tote a holstered gun in that one. Could be wrong though.
I might be wrong since I last watched the show many years ago but I seem to remember a Colt Official Police with different barrel lengths. The revolver seemed to be bigger than a Police Positive.
I also recal Andy with a Winchester lever gun on one episode.