Tom Beckstrand visits the SIG Sauer Academy to learn more about the development of the SIG MCX Rattler in 5.56 NATO with Mike Joslin, SIG Sauer’s assistant rifle product manager. The Rattler has been evaluated by SIG Sauer and the U.S. Army Special Operations Command (SOCOM) and has survived extensive testing.
The Rattler program started with the .300 Blackout cartridge, but relentless demand for a 5.56 version led to this. SIG Sauer’s engineers had to redesign the Rattler away from the original gas-port design and develop a gas trap approach to fit and effectively cycle the 5.56 NATO cartridge and all of its loadings
Available as both a pistol or short-barreled rifle (SBR), there is a caliber-exchange kit to swap between .300 BLK and 5.56 NATO. The Rattler is considered by many to be the ultimate compact personal defense weapon (PDW).