It can seem like it takes forever for your rifle to cool down when you want to get back to shooting. MagnetoSpeeds new barrel cooler, Riflekuhl, is designed to get barrel temperatures down to intended operating levels quickly. The turbocharger inspired impeller is engineered to produce great airflow in a small package. Powered by a single CR123A Lithium battery (included), ambient air is forced through the extendable nozzle down the bore of the rifle. Designed to seal and push air flow down the barrel where its needed to efficiently cool barrels, typically under 7 minutes. Riflekhl doubles as a chamber flag and features an exclusive built-in air filter to prevent dust and dirt from being blown into your rifle. Spend less time waiting and more time shooting with the MagnetoSpeed Riflekhl. Features of the Riflekuhl Barrel CoolerReplaceable dust filter (50 Microns)Strong neodymium magnet secures device to chamberIncluded CR123 lithium battery lasts for dozens of range sessionsSpring loaded retractable nozzle designed for compact and durable storageBelt/Pocket clip included for easy carryChamber seal for increased cooling efficiency Red body serves as an empty chamber flag MagnetoSpeed RifleKuhl Barrel Cooler MS_RK