Sig continues to push the envelope of development with their Rattler PDW system. While it's not what I would call revolutionary (that's tough to achieve in todays world) I can call it innovative. The Rattler was presumably designed for Special Operations but found its way onto the US market. How the military might use such a tool vs. the civilian world conflicts with Sig's mission of the gun. How does it work though? Is the Sig Rattler a good .300 Blackout host? Is it reliable? Is it reasonably accurate? We explore the Sig Rattler in 300BLK and seek answers to some of these questions.