Sig Sauer(R) AIR-RATTLER-BB is a CO2 powered air rifle chambered in 4.5mm Steel BB with a 5.5 in. smooth-bore barrel and a 30rd capacity. This MCX Rattler BB configuration features a black finish an M-LOK handguard a folding minimalist stock and a full-length Picatinny optics deck. It includes one 30 round magazine flip-up front and rear sights and selectable Semi-Auto and 3rd burst fire modes.Key Features4.5mm Steel BB chambering5.5 in. smooth-bore barrelCO2 operating systemSemi-Auto and 3rd burst fire modesM-LOK handguard with full-length Picatinny optics deckFolding minimalist stockFlip-up front and rear sightsIncludes 1 30 rd. magazineSIG SAUER(R) produces firearms with a strong emphasis on modern engineering modularity and duty grade performance across its catalog. The brand is widely known for handguns rifles optics and related products developed for military law enforcement defensive and sporting applications. SIG Sauer(R) products are recognized for durable construction practical innovation and broad platform support across a wide range of configurations.