The FM-9 is a dedicated 9mm AR carbine using a Glock-magazine lower and simple blowback upper with a 16-inch barrel, offered as a complete rifle or stripped lower for custom builds. Type: Rifle Action: Semi-Automatic Caliber: 9mm Capacity: 33 Year introduced: 2018, USA Weight: 80 oz Overall length: 34" Status: Active Intended use: Competition, Home Defense, Sport