Introducing the MCX REGULATOR using the heart and soul of the legendary MCX platform combined with a proprietary lower design all built around shooter ergonomics comes a whole new level of MCX modularity. Never before has a ranch rifle possessed the DNA of a rifle used by elite Special Forces operators around the world. The MCX Regulator is here and the ranch rifle is about to change forever Mount up. - SIG MCX-REGULATOR FEATURES: - Reduced Weapons Visual-IR Signature GEN II NiR FDE - Cerakote - Magpul SGA Stock Mossberg 500/590/590A1 - Fully Ambidextrous Mag Release Safety Selector and Bolt - Catch - SIG Designed Compensating Muzzle Brake - Receiver Integrated ARCA Rail - Lower Receiver Compatible with All MCX Upper Receivers - 3 MOA Romeo2 Optic Installed on RX model - CALIBER 5.56 NATO - SIGHTS ROMEO2 Installed - BARREL LENGTH (IN) 16.0 - MAGS INCLUDED (1) 10rd Polymer Mag - MAG TYPE AR-15 - ACTION TYPE Semi-Auto - STOCK TYPE Magpul SGA Mossberg 500/590 Traditional - BARREL MATERIAL Cold Hammer Forged Carbon Steel - TRIGGER TYPE 2-Stage Match - TWIST RATE 1:7 - FOREND TYPE Alloy - RECEIVER FINISH Gen II NiR FDE Cerakote - OVERALL LENGTH 39.1 in - OVERALL WIDTH 2.4 in [61 mm] - HEIGHT 5.5 in [139.7 mm] - ACCESSORY RAIL M-LOK - OPERATING SYSTEM Gas Piston - WEIGHT 8.0 lb. [3.6 kg] w/Magazine