MagSwab 9mm / .38 Super / .40 Cal. / 10mm / .45 Cal. (Fits Staggered Magazines) A go to tool for competitive shooters, law enforcement, military or wherever positive ammo feeding is critical. The patented KleenBore MagSwab cleans and addresses a commonly overlooked area of maintenance on magazine-fed firearms. Removes gummy residue, dust, dirt, and unburned powder from inside the magazine and well for quicker, easier magazine release and increased reliability for cartridge feed. Features: KleenBore Exclusive Patented Design Exclusive & Patented Design 100% Cotton Swab Improves magazine release and cartridge-feed reliability Designed for use in staggered Magazines fo Made in USA