semiautos & capacity for WY/MT?

[Mr. 16 gauge]

My friend and I drew antelope tags for (Northeast) Wyoming, and we are staying just across the border in MT. Ours is a three day hunt, but if we tag out early, we would like to do a few other outdoor related things.
From what I can read on the F&G websites, coyotes are considered predators and no additional license is required. Would love to throw the predator calls and decoy in the truck as well, and maybe hit some state or BLM land for a crack at a yote or two.
Would like to take my AR15 along, but I can't find anything on either F&G website as to legality & number of rounds that are allowed for said rifle.

Anyone have the answer?

BTW: To the Montana F&G folks....you website is a NIGHTMARE to navagate through!