This is the latest version of the MUM/MiNi-14 Weapon Mount.

It is a precision machined aluminum mount that attaches directly to any Mil-STD M1913 Picatinny Rail via a thumb screw. The Quick Rail Interface is offset to place the center of the optic over center bore and optically aligns the MUM with your red dot sight. This mount is a direct improvement over the standard cantilever mount because it takes up less rail space and allows your MUM to clear a BUIS.