This is because it is constructed with a thinner gauge of sheet metal. As mentioned earlier, the M11 is much lighter than the M10. If you are looking for a 9mm machine gun and cannot decide between the 10 or the 11, then there are a few more differences to consider. The Difference Between the MAC 11/9 and the MAC10/9 380, but the M10 also weighs twice as much and has a slower muzzle velocity. Which gun to get is really a matter of preference in size and caliber. 380 caliber MAC 11 weighs only 3.5 pounds, fires 1,200 rounds per minute and has a muzzle velocity of 980 feet per second. The maximum effective firing range is 50 meters and the muzzle velocity is 280 feet per second.
45 caliber MAC 10 weighs 6.26 pounds when empty and it fires 1,145 rounds per minute. There are many differences between the two MACs, the biggest being their size, caliber, construction, and manufacturer. 45 ACP M10 and then later made the MAC 11 in a 9mm and a. Little did Ingram know, his M10 design would become very popular.
He built it with as few working parts as possible to reduce cost and increase reliability.
His goal was to make a machine gun that was compact, lightweight, affordable, and reliable. Ingram designed the MAC 10 in the early 1970s as a compact machine gun.
