Product DescriptionThe HKS Mag Loader is a fast, thumb-lever-operated magazine speed loader designed to reduce finger fatigue and speed up range and training sessions. Simply slip the magazine into the loader, depress the thumb lever, and load-allowing you to load up to 15 rounds in about 18 seconds. Built to work with staggered (double-stack) magazines in 9mm and .40 caliber, it's a compact, easy-to-use accessory for compatible Glock, Heckler & Koch USP, and Smith & Wesson Sigma magazines.Product Highlights Thumb-operated lever system helps load magazines faster and with less hand fatigue Capable of loading up to 15 rounds in approximately 18 seconds Designed for staggered (double-stack) 9mm and .40 caliber pistol magazines Simple slip-on design: insert magazine, depress lever, and load Made in the USASpecs Brand: HKS Speed Loaders Product Type: Magazine speed loader (mag loader) Manufacturer Part Number: GL940 UPC: 088652009428 Estimated Loading Performance: Up to 15 rounds in ~18 seconds Magazine Type: Staggered (double-stack) magazines Compatible Calibers: 9mm and .40 caliber (per packaging/retailer listings) Compatible Firearms/Magazines (as listed): Glock 17/23, Heckler & Koch USP, Smith & Wesson Sigma Country of Manufacture: USADisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.