The Kel- Tec P-11 is compact and lightweight, especially well-suited for plain-clothes police officers, security personnel, or as a secondary weapon for military service members. The P-11 is a semi-automatic, locked-breech, DAO, pistol, chambered for the 9mm Luger cartridge. Its ergonometry, perceived recoil, and practical accuracy are comparable to much larger guns. The barrel and slide are made of SAE 4140 Ordnance steel, heat-treated to 47 HRC. The rectangular frame is machined from solid 7075-T6 aluminum and houses the firing mechanism. The grip is made of the ultra high impact polymer DuPont ST-8018. A 10-round double-column, all-steel magazine is standard equipment.