The famous M93R is now upgraded with the latest KWA NS2 gas system. The NS2 internal gas delivery system is a KWA patented design that utilizes an advanced lightweight composite gas piston with a two-stage internal expansion chamber that delivers the gas more efficiently than that of its predecessors. The NS2 design also increases the weapon cycle rate and provides for a crisp, realistic blow back action. Other parts of the pistol has also been improved and updated along with a new magazine that is milled from a solid alloy billet. This new construction strengthens the magazines structural rigidity and increases pressure carrying capacity.