Berettas Px4 Storm features an exclusive Berettadesigned locked breech with a rotating barrel system which reduces felt recoil and muzzle rise. The chromelined barrel provides extreme corrosion resistance and also features a deeplyrecessed combat muzzle crown to protect the rifling. The light durable frame employs modern thermoplastic technology through the use of technopolymerreinforced fiberglass and features an integral Picatinny MILSTD rail. The Px4 Storm has an ambidextrous decocking lever and a reversible magazine release and it may be configured with backstraps. Includes magazine and backstraps. Action: DA/SACaliber: 9mmBarrel Length: 4″Capacity: 10+1Safety: DecockerGrips: Black Interchangeable BackstrapSights: 3-Dot WhiteFinish: BlackSlide: SerratedSERIES: *CA Compliant