Trying to find specific model this goes to:

So, was looking for a mesa Leo adapter for a 590m (specificly searching for Mesa Leo Mossberg 590) and saw this in my searches and went for it. Excitement of the moment in not reading all the details... Which there were no details listed.

Im unsure if this is for the mossberg 590, or one of Mesas other models like the beretta, remington 870, or one of those. as i think of it, im not sure it even comes with the needed screws and other parts, but at least those should be reasonably easy to find..

Anyways, the item in question: https://i.imgur.com/96hFSKm.png

If anybody can identify which shotgun it goes to, i would really appreciate it. Im hoping i lucked out, but if not... well. Consequences of my actions and all.