Building upon a legacy of innovation and a heritage of crafting some of the world's finest hammer-fired pistols, the SIG SAUER P211-GTO SPECTRE COMP takes the timeless performance of the P211 platform and refines it through Custom Works craftsmanship and premium materials. Specifications and Features: Caliber: 9mm Luger Pistol Size: Full-Size Mags Included: (1) 23rd and (2) 21rd P320-Compatible Steel Magazines Sights: Fiber Optic Front, Black Fixed Rear Sight Radius: 5.56" Slide Finish: Nitron Slide Material: Stainless Steel Grip Type: Brass LOK Grip Panels Accessory Rail: 1913 Picatinny Rail Barrel Length: 4.4 in Bull Barrel paired with MACH3D Compensator