MakerShot Stainless Steel Speedloader & Bottle Opener Compatible with all rimfire single stack pistol magazines, including: Ruger 22/45 and 22/45 LITE, Ruger MK I, II, and III, Smith & Wesson 22a, S&W Victory, Beretta Neos, Browning Buck Mark, Colt Woodsman, and High Standard 22LR series pistols. Compatible with all rimfire double stack pistol magazines, including: Walther P22, Ruger SR22, Smith & Wesson M&P22 Full Size, Smith & Wesson M&P22 Compact, Umarex Colt 1911/22, Sig Sauer Mosquito, and Hammerli Trailside.