The Ronin® AOS in 9mm combines a legacy of service with modern features. Built for strength the Ronin features forged steel slides and frames carbon steel in the slide and stainless steel in the frame and a hammer-forged barrel for lasting durability. It includes a standard 5 barrel with a traditional recoil spring assembly and barrel bushing. Enhanced with AOS the Ronin employs a series of plates fitting popular optics like RMR Shield Delta Point Pro and Docter. Each AOS plate integrates a rear sight ensuring proper optic height an intuitive sight picture and visible co-witnessing in nearly all optic configurations making the Ronin a versatile modernized firearm ready for a lifetime of service. – Caliber 9mm – Color Blued / Stainless – Barrel 5 Forged Stainless Steel Match Grade Fully Supported Ramp 1:16 – Slide Forged Carbon Steel Blued Optics-Ready – Frame Forged Stainless Steel – Sights Fiber Optic Front Black Serrated Rear Viridian RFX11 – Recoil System GI Style – Grips Crossed Cannon Wood Laminate – Magazines (4) 9-Round – Weight 41 oz – Length 8.6 – Height 5.5