my neighbors dad passed away a while back ,his sons have been slowly cleaning out his house since he passed . every time they find something gun related they bring it to me I guess he had guns , ammo ,and loaded mags stashed throughout the house mostly 22 .they brought me something a week or 2 ago ive never seen or heard of a small black box that says caseless ammo 22 cal 100 rounds . what can I do with this stuff ? how does it fire ? is it safe to fire ? I'm totally clueless .