Wow, this is a BIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIG change, almost SEISMIC in it's effect, about on par with letting active duty smoke pot off duty. Stemming from the Vietnam days of the unruly "prison or service" and draftees that had to be ruthlessly guarded, not having access to weapons on post is a cultural cornerpost of military life.
Also felt a little odd to me, especially when they would tell us to not wear our uniforms when off post lest we attract and be attacked by hostile agents (which I'm not sure ever really happened but was always a persistent rumor). I know quite a few folks I wouldn't trust with a personal firearm though, military service is definitely not a reliable indicator of mental stability and firearm competence.
We'll see the fallout of this. IDEALLY this makes a ton of sense, military are trained in firearms, they are expected to put themselves into dangerous situations. But the......quality of servicemember isn't always the best, strife and stress are pretty rampant, and tempers can flare.
At best I suspect folks will at least be able to keep their POWs in their car while on duty, then have access to them when going back home. Expect a lot of car break-ins now, even more so than usual.