Manufaturer Part Number: 211F9GTOR3PSig Sauer P211-GTO ROMEO3 PRO SpecificationsManufacturer: Sig SauerModel: P211-GTO ROMEO3 PROCaliber: 9mmAction: Single action onlyCapacity: 23 rounds, 21 roundsBarrel Length: 4.4"Barrel Profile: Bull barrelMuzzle Device: MACH3D compensatorOverall Length: 8.5"Overall Height: 6.6"Overall Width: 1.48"Sight Radius: 5.56"Weight: 46 oz. with magazineFrame Material: Stainless steelGrip Module: AlloySlide Material: Stainless steelSlide Finish: NitronSlide Features: Aggressive serrations, SIG PRO footprintTrigger: Flat skeletonized, single action onlyGrips: G10 panelsMagwell: Removable steelSlide Release: AmbidextrousSights: Fiber optic front, black fixed rearOptic: ROMEO3 PRO, 8 MOA red dotMagazine Compatibility: P320-compatibleIncludes: 1 23-round magazine, 2 21-round magazines