The MM-1 "Minimore" is a small-sized version of the M18A1 claymore mine, currently manufactured by Arms-Tech Ltd. of Phoenix, Arizona.
The company literature refers to it either as the "MM-1 Directional Command Detonated Mine" or as the "Minimore-1 (MM-1) Miniature Field-Loadable Claymore Mine".
The MM-1 occupies only one third of the volume of an M18A1. Being significantly smaller and lighter than the original, more can be carried at one time (three MM-1 in place of one single M18A1).
The MM-1 produces a narrower arc of fragments than the claymore mine, according to the manufacturer: at it produces a pattern wide and two feet high, compared with a wide pattern for the claymore mine at the same distance.