The thread - similar to a bottles top - was clearly visible just passed the forward portion of the receiver front and aft of the short protruding barrel.While introducing some impressive and interesting concepts, the weapon system failed to materialize as a serious contender within the established submachine market and was soon overtaken by other factor out of her control.
Sten Magazines 10 Review Full Production OrdersThe weapon system was not helped by the American militarys decision to pass on full production orders and her future was ultimately decided for her with the collapse of her host company, Military Armament Corporation (MAC - hence the MAC-10 designation).Despite the widely-accepted designation of MAC-10, the submachine gun was officially marketed as the M10 and the former identifier was never used in any official capacity. However, it has since become universally accepted as the MAC-10 and nothing more. MAC-10 Origins Design of the MAC-10 began as early as 1964 by Gordon B. Ingram. Ingram was a former associate at the Police Ordnance Corporation before leaving to develop the MAC-10. He partnered with Mitchell Werbell III, a former OSS and CIA operative and founder of SIONICS (Studies In the Operational Negation of Insurgents and Counter-Subversion) - a firm centering on the development and sales of firearm-capable suppressors and silencers and their partnership produced the Military Armament Corporation (MAC). Their joint venture and flagship product was to become the MAC-10 with the ultimate hope being quantitative sales to the US military during the ongoing Vietnam War. ![]() ![]() There was a rounded-rectangle trigger ring ahead of the pistol grip and below the forward portion of the receiver. Construction was of steel stampings and the bolt was of a wrap-around - or telescoping - design, essentially wrapping around the barrel and allowing the MAC-10 to achieve such a short receiver length and thus remain a compact weapon system. ![]() The cocking handle was situated along the stop of the receiver and accessible by either hand. Interestingly, there was a notch cut through the handle to ensure an unfettered line-of-sight between the operator, the weapon and his target. The cocking handle also doubled as a safety for it could be turned in a 90-degree action to lock the bolt and serve as a visual indicator that the weapon was made safe and unready to fire. The firing action was accomplished through an open bolt, blow-back operated design. A rather large ejection port opening was fitted along the right side of the receiver, corresponding to the placement of the magazine beneath it. A short sling could be attached to a hook at the front panel of the receiver. Muzzle velocity was rated at 919 feet per second with the heavy bullet and rate-of-fire was an impressive 1,145 rounds per minute. The removable wire stock was fully collapsible to allow for an ever more compact design. Overall length was 1 foot, 9.6 inches with the stock extended but the system could maintain an incredible length of just 10.7 inches with the stock completely removed. The length was increased to 2 feet, 7.4 inches with the addition of the sound suppressor (detailed below). Unloaded weight registered at 2.84 kilograms sans the suppressor. Its All in the Barrel Perhaps the most unique of all the MAC-10 features was its threaded barrel.
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