Winchester made similar setups, but in a zipper closing binder. Cartridges and components have velcro on them and can be changed. The ones I have seen were primarily aimed at the LE dealers and departments. I have one of the kits, along with a fair number of extra cartridges that could be exchanged on the two boards in each side of the binder. There were enough extras that I could put many of the auto pistol calibers in my singles collection without taking them off the board (which I would not do).
Nice item. Thanks for sharing it with us. It is the first one of this kind that I have seen from Remington. In fact, the only other ones like them I have, both in zippered binders, are from Tula, in Russia. One represents their brand, Tula, and is in English. The other is for WOLF and is in Russian. Funny - you would think they would be the opposite.