I've got some gun props that are a prop with multiple parented props (trigger, slide, magazine, etc...about 19 total)  When I load it, of course the list of props shows up in my "Props" menu. 

Problem is, I need 4 of these in my scene, which makes for 40 props in addition to all the other props in my scene...and they are all named similar, except for 1-1, 1-2, 1-3, etc.

Any way to "hide" or group these so they don't over-clutter the menus.