The MM-1 is a 40x46mm semi-automatic grenade launcher manufactured in the USA by the Hawk Engineering Company. The manufacturer claims that it has been used by US Special Forces units, as well as the military forces of several South American and African countries. Relatively heavy and bulky, the MM-1 can provide considerable firepower, with practical rate of fire as high as 30 rounds per minute. It can be useful in ambushes and other fast-paced close combat situations.