Tiny Keltec PR57 Pistol - 5.7x28!
The Kel-Tec PR57 is a unique 5.7x28mm pistol featuring an internal 20-round magazine loaded via a proprietary stripper clip. It's the smallest and lightest option in its caliber class, weighing just 13.9 oz empty. While innovative, its stripper clip system is slower than traditional magazines, and the DAO trigger lacks second-strike capability. Reliability varied with ammunition types tested.









