The VK-1 rifle sets itself apart with a patented low-profile piston system that incorporates optimal gas port sizing and an advanced piston assembly. This design features a unique cup and spigot arrangement, enhancing gas seal efficiency and overall system performance. A standout feature of the VK-1 is its staged gas bleed system, ensuring consistent operation whether suppressed or unsuppressed and accommodating various types of factory ammunition seamlessly. The reimagined VK-1 Short Stroke Piston System includes a fully-supported 1-piece op rod and a removable gas block. This configuration matches the footprint and weight of a standard DI AR-15 while harnessing the benefits of a piston-driven system, ensuring reliability and performance in diverse operational conditions.