.45 ACP variant of the CX4 Storm carbine using PX4 .45 compatible magazines. The heaviest and most powerful caliber in the CX4 series, offering law enforcement and home defense users a potent pistol-caliber carbine option. Type: Carbine Action: Semi-Auto Caliber: .45 ACP Capacity: 8 Year introduced: 2005, Italy Weight: 68.5 oz Overall length: 29.7" Status: Active Intended use: Duty / Service, Law Enforcement, Home Defense