5.7 x 28mm

Keltec

Keltec PR-5.7 5.7x28mm Semi-Auto Pistol with Tan Polymer Frame and Fiber Optic Sights

Keltec

Keltec PR-5.7 Semi-Auto Pistol in Black with 20+1 Capacity

Keltec

Keltec PR-5.7 5.7x28mm Semi-Auto Pistol with Green Polymer Frame and Fiber Optic Sights