The Top Gun for 3-Gun Now Comes Optic-Ready. Patent-pending receiver cuts and a removeable cover plate allow direct mounting of Shield RMSc-pattern micro dot sights for imporved eye alignment and faster target aquisiton. Inside every 940 JM Pro you will also find a new durable gas system specially-coated or finished internal parts for smooth operation and a competition-level loading port elevator and follower. Outside a user-adjustable stock and streamlined forend sport Mossberg signature texturing while a host of stylized functional components combine for competition - optimizing speed accuracy and durability. - Optic-Ready (Shield RMSc-pattern - Clean-running gas-vent system - Quick-empty Magazine Release - Built for Quad Loading - Adjustable Length of Pull - Drilled and Tapped Receiver - Adjustable Stock Drop System - Briley Choke Tubes - HIVIZ TriComp Fiber Optic Sight - Gauge 12 Gauge - Action Type Semi-Auto - Chamber Size 3 - Usage Competition - Barrel Type Vent Rib - Barrel Length 24 - Barrel Finish Matte Blue - Choke Briley Ext Set - Capacity 4+1 - Length 44.75 - LOP 13-14.25 - LOP TypeAdjustable - Sights Front FO; Optic-Ready - Stock Adj. LOP Cast Drop - Synthetic (Black) - Weight 7.75