The Banshee Mk4 features mil-spec receiver set designed to chamber intermediate cartridges like the popular 5.56x45mm NATO in a compact pistol configuration. The Banshee utilizes a traditional buffer tube operation in the action making it highly compatible with a wide variety of brace options. New for 2025, CMMG is happy to introduce their tried and true platform in Hornady's new .338 ARC cartridge. Made to combine the prowess of the AR15 platform with the stopping power of a large bore caliber, .338 ArC strives to emulate the sub or supersonic versatility of the now ubiquitous .300 BLK cartridge with more energy on target and less gas system tuning when switching from suppressed to unsuppressed. This model comes with a Z-series linear compensator and a CMMG's EML9-series MLOK hand-guard This model features a 10.5-inch barrel and a RIPBRACE pistol brace along with an Armor Black Cerakote finish. One 10-round magazine is included."/\