H&K KWA USP with NS2 Gas Blow Back System 6mm ID 723364750021
The popular H&K KWA pistol is now updated with the KWA NS2 gas system. The new gas system increases the performance and improves the overall reliability of the gun. 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 like the recoil springs, recoil springs guide assembly, hop-up chamber, magazine followers, has also been improved along with a new magazine that is milled from a solid steel billet. This new construction strengthens the magazines structural integrity and increases pressure carrying capacity. The magazine feed-lip has also been reinforced.