The Beretta M9A4 features the proven design of the M9 series with new modern features that include a red-dot optic compatible slide a beveled magazine well and texturized Vertec-style thin grips for instinctive control and a more natural fit for all shooters. – Caliber: 9mm – Action: Single/Double – Barrel length (in): 5.1 – Grip Width: 1.3 – Magazine Capacity: 18 – Overall height (in): 5.4 – Overall length (in): 8.7 – Overall width (in): 1.5 – Sight radius (in): 6.3 – Weight unloaded (OZ): 33.4