The KelTec PR57 is an innovative compact carry pistol chambered in 5.7x28mm that features a unique top-loading, magazine-less design. Instead of traditional magazines, the pistol holds 20 rounds directly in its grip, which can be loaded individually or quickly inserted using the included 10-round stripper clips. This distinctive approach, combined with a rotary barrel system, allows for an ultra-slim frame profile and significantly reduced weight, making it approximately 40% lighter than other 5.7mm pistols on the market. The PR57 emphasizes simplicity and practicality for everyday carry, with a minimalist design intended to reduce complexity during high-stress situations. The pistol features an optics-ready slide with an included mounting plate, and comes standard with two 10-round stripper clips for rapid reloading. Its streamlined design eliminates traditional magazine-related issues while maintaining high capacity, making it a unique option for those seeking a lightweight, reliable carry pistol in the powerful 5.7x28mm chambering.