Ruger has introduced six new configurations in its PC Carbine family, including this free-float handguard model. This handy blowback semi-auto is chambered in 9mm with an anodized aluminum handguard that features M-Lok accessory slots. Other models are available in .40 S&W. The 9mm model ships with one 17- or 10-round SR-Series/Security-9 pistol magazine, but an interchangeable mag well allows it to accept Ruger American Pistol mags and, more important, Glock magazines. This means it can have up to 33 rounds on board—or more with an aftermarket drum magazine. The free-float PC Carbine model has a black synthetic stock and either a threaded or unthreaded 16.12-inch barrel. The receiver is topped with an optics rail; iron sights with an adjustable ghost ring rear sight come standard. The magazine release button and charging handle are both easily reversible, making the gun fully ambidextrous, save for the push-button safety on the trigger guard. SRP: $729. (