Look up Army Regulation 190 -11 dated 2006 I believe.
The big Army requires all privately owned weapons residing on an installation to be registered with the Director of Emergency Service (combine Provost Marshal with fire dept and you get a new directorate).
Some installations expand that to include weapons brought on base for any reason (hunting, skeet, target shooting) by anyone.
No big conspriacy here.
Now, the mission commander (or highest ranking cat on the base) or any other level of commander can order his soldiers who live off base to register thier weapons. The theory of maintaining good order and discpline goes pretty far. Is that order legal?
Depends on who the SJA is advising the commander. Ask ten lawyers, get ten answers.
You will never get an answer until the order is given, disobeyed, and soldier elects court martail, and then the case is heard. I would bet the soldier would lose. Dumb, unfair, crazy, or bad orders can be legal.
It is not a gun grab, it is all about reducing suicides and effecting domestic violence. Yes commanders are held responsible for just about everything. It is CYA, so if a soldier does kill himself, the commander can say they did every thing they could when they saw a warning sign and took his weapons.
The data base is COPS. It is a computer suite that maintains vehcile information as well as police cases and a few other things. If the installtion inputes the data into COPS it will be there.
My installation is currently bantering around with the same theory, to require registration of all weapons for military personnel to include off post. I have heard of one unit already requiring it.
Like any other order in the Army, you disobey, you take your chances. This is one that would make me think hard.
Oh forgot to add, if you are in the Army, you are under thier jurisdiction. Their is no on base, off base for orders. Any soldier at any time can be apprehended by an NCO or MP/CID off base for an offense and prosecuted. A soldier is a soldier 24 hrs a day, anywhere he goes.