The Rock Island Armory MAPP MS is an optics-ready double-stack 9mm 1911 with a milled slide accepting Shield-footprint red dot optics. Combines the high-capacity MAPP platform with modern optics compatibility on the traditional single-action trigger. Type: Semi-Auto Pistol Action: Single-Action Caliber: 9mm Capacity: 17 Year introduced: 2021, Philippines Weight: 40.5 oz Overall length: 8" Status: Active Intended use: Competition, Home Defense