The SIG SAUER M18 is the official sidearm of all branches of the U.S. Military and the official sidearm of the U.S. Marine Corps. The commercial M18 brings the same unprecedented accuracy extreme reliability and unmatched durability the military demands coming standard with SIGLITE night sights and a removable night sight rear plate. The optic ready slide is directly compatible with ROMEO-M17 red dot optic. The slide and grip module are the same coyote tan as the military version and it includes (1) 17 round magazine and (2) 21 round magazines. The SIG SAUER M18…chosen by the U.S. Marine Corps and the U.S Military now available to you for the first time. – Commercial release of the MHS M18 – Coyote PVD Finish – MHS Slide assembly with single screw sight plate configuration now compatible with Romeo-M17 – Deltapoint Pro Optic Footprint and compatible with ROMEO-M17 Red Dot Optics – M18 serial number series – (1) 17rd (2) 21rd – CALIBER 9mm Luger – PISTOL SIZE Carry – MAGS INCLUDED (1) 17rd / (2) 21rd Steel Mags – SIGHTS SIGLITE Front / Night Sight Rear Plate – OPTIC READY Yes – RX FOOTPRINT M17/M18 MHS: Deltapoint Pro & Romeo-M17 – SIGHT RADIUS 5.8 in – SLIDE FINISH Coyote M17 PVD – SLIDE MATERIAL Stainless Steel – ELECTRO-OPTIC INSTALLED No – TRIGGER ACTION Striker – TRIGGER TYPE Striker Fired w/Curved Trigger – MANUAL SAFETY Yes – FRAME FINISH Stainless Steel – FRAME MATERIAL Stainless Steel – GRIP MODULE Standard Coyote Carry Medium Grip – GRIP COLOR Coyote Tan – ACCESSORY RAIL M1913 – BARREL LENGTH 3.9 in [99.06 mm] – THREADED BARREL No – BARREL MATERIAL Carbon Steel – OVERALL LENGTH 7.25 in – OVERALL WIDTH 1.5 in – HEIGHT 5.5 in – WEIGHT 28.1 oz