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The MCX is an extremely modular platform that allows users to adapt its barrel, handguard, stock and chambering—5.56mm NATO, 300 Blackout or 7.62x39mm. Multiple barrel lengths are available, including 9-, 11.5-, 14.5- and 16-inch units, and shooters can quickly swap those in along with a new handguard, such as a slim KeyMod version or a larger one that will cover a suppressor, by accessing two captive Torx screws. For stocks, shooters can choose between a skeletonized folding stock, a retractable MPX-style stock, an SBX stabilizing brace for pistols, a collapsible M4-style stock or a slim, folding, retractable stock.
All of the MCX’s controls are ambidextrous, including the charging handle, safety selector and magazine catch. The gun was designed for 100-percent suppressor use, so the cam path is made of steel for extra durability. The feed ramps are also made of steel and are removable. The charging handle has steel pins. Finally, the forward assist deflector assembly is removable and replaceable. All of these features enhance the MCX’s extreme reliability. Sig will also offer MCX upper assemblies for use on AR-platform lowers.
For more information, visit sigsauer.com or call 603-610-3000.