The VK-1 rifle showcases an innovative low-profile piston system with a patented design, incorporating optimized gas port sizing and an advanced piston assembly. Its unique cup and spigot configuration enhances gas seal efficiency, contributing to 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. The reimagined VK-1 short stroke piston system includes a fully-supported 1-piece op rod and a removable gas block. Despite matching the footprint and weight of a standard DI AR-15, it delivers the advantages of a piston-driven system, combining reliability with the familiar handling characteristics of the AR platform.