The PMR-30 is a lightweight, full size pistol (.22WMR). The PMR-30 operates on a unique hybrid blow back /locked-breech system. This operation system allows for the use of a wide variety of ammunition as it seamlessly adjusts between locked breach and blow back operation, depending on the pressure of the cartridge. It uses a double stack magazine of a design that holds 30 rounds and fits completely in the grip of the pistol. The trigger is a crisp single action with an over travel stop. The manual safety is a thumb activated ambidextrous safety lever (up for SAFE, down for FIRE). The slide locks back after the last shot and a manual slide lock lever is also provided. Slide and barrel are 4140 steel, frame is 7075 aluminum. Grip, slide cover, trigger, mag release, and safety levers are glass reinforced Nylon (Zytel). The magazine is also Zytel with round count ports. Other features include: dual opposing extractors for reliability, heel magazine release to aid in magazine retention, dovetailed aluminum front sight, Picatinny accessory rail under the barrel, Urethane recoil buffer, captive coaxial recoil springs. PMR30 disassembles for cleaning by removal of a single pin.