This is a used Masterpiece Arms MPA57SST pistol chambered in 5.7x28mm. It features a 5-inch barrel, 20-round magazine, adjustable rear sight, wing protected front sight, picatinny optics rail, push button magazine release, and side-cocking charging handle. Includes factory box. Overall, this pistol is in good condition with some handling wear on the frame. This would be a good choice for recreational target shooting. Buy online today!