SEMI-AUTOMATIC HANDGUNS AND PISTOLS Whether for personal defense, target shooting or plinking, Firearms worlds Guide offers a huge selection of semi-automatic handguns. We carry all major calibers for pistols & handguns, including .45 ACP, .40 S&W, 9mm, 10mm and .22LR. Achieve top performance from trusted brands like Glock, Springfield, Walther, Smith & Wesson and many more.