Kahr's black polymer frame features patented 4140 steel inserts molded into the frame in the front and back for added rigidity and strength. Kahr's incomparable cocking cam trigger system employs a patented cam to both unlock the firing pin block (passive safety) and complete cocking and releasing of the firing pin. The system provides a safe-cam action and unbelievably smooth double action only trigger stroke, fast to fire in critical defensive situations.