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