Buck's gadget is the Skeleton Key, which is an underbarrel shotgun used primarily to destroy soft walls and soft hatches. You can use the Skeleton Key anytime during the round but it does have limited ammo.
Frost's gadget is the Welcome Mat, which is basically a bear trap. When attackers step in the Welcome Mat, they are put in the DBNO (downed but not out) state. Frost has three Welcome Mats.
