The MAC-10 (an unofficial title which is actually known as The M-10), was designed George Ingram in 1964. Seen as a ''high firepower'' hand-held Machine Pistol (often confused with the identifier Sub-Machine Gun), The MAC-10 was targeted for US Special Operations Forces. Various designs were refused by The US Army until 1970, when the final version was approved and deployed with The Army's Long Range Recon and Navy SEAL Units in Vietnam. The MAC-10 remained in inventory until at least the mid-1980s with The US Army Delta Force.
Weighing 6-lbs, The MAC-10 originally was chambered for the .45 Caliber Round. While powerful, this caused too many instances of jamming due to the rapid cyclic rate. Most MAC-10s after 1975 were chambered for the 9mm Round. Using either a 30-round Ammunition Clip or 32-round Box attachment, the maximum rate of fire is 1,200-rpm. The range is between 100 and 150-yards. The MAC-10 was manufactured in a Civilian Version in the 1980s, but these were declared banned in 1994 by The US Government. Most US Special Operations Forces stopped using The MAC-10 in the 1990s.