The CMMG Banshee in .357 SIG is one of the rarest caliber offerings in the Banshee lineup. Using the Radial Delayed Blowback system, it handles the high-pressure .357 SIG bottlenecked cartridge reliably. The 16-inch barrel extracts significant velocity from the .357 SIG and the RDB system manages its high chamber pressure. CMMG is one of very few AR manufacturers to offer this caliber in a PCC format. Type: Pistol Caliber Carbine Action: Semi-Automatic Caliber: .357 SIG Capacity: 20 Year introduced: 2020, USA Weight: 68 oz Overall length: 33.5" Status: Active Intended use: Home Defense, Competition, Range Use