Here are some machinist drawings for SMG Frames – MAC10, MAC11, Cobray M11-9, Cobray M12.
The rate of fire of the M-11A1 is one of the biggest complaints on the firearm. Listed as approximately 1,200 rpm (rounds per minute), the MAC-11 is capable of emptying the entire 32-round magazine in less than two seconds, which many users view as a drawback. Rate of fire will also vary depending on the weight of bullets used. The gun also has a selector switch that allows it to fire only one round at a time in the semi-automatic mode.
Noting the weapon’s poor accuracy, in the 1970s International Association of Police Chiefs weapons researcher David Steele described the MAC series as “fit only for combat in a phone booth.”
The M-11 is the least common version in the MAC family of firearms. At the MAC-11’s high cyclic rate, extreme trigger discipline is required to discharge short bursts, which are required for combat expediency. Without proper training, the natural tendency of the inexperienced shooter is to hold down the trigger, discharging the entire magazine in little more than two seconds, often with poor accuracy due to recoil.
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