The slide and barrel of the PMR30 are 4140 steel, and the frame is 7075 aluminum. Much like other Kel-Tec Pistols, the grip, slide cover, trigger, mag release, and safety levers are glass reinforced Nylon (Zytel). The magazine is Also Zytel, and holds 30 rounds, 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.