Begadi NPAS in VFC/SIG Air ProForce M17/M18?


Ice K Begadi NPAS in VFC/SIG Air ProForce M17/M18?

Ice K tries the Begadi NPAS if they can fit the SIG M17 and M18 GBB pistols made by VFC. The Begadi NPAS (Negative Pressure Adjustment System) is designed to decrease energy in GBB weapons, thereby enhancing gas efficiency and reducing cooldown susceptibility. It comprises a two-piece stainless steel valve, PTFE discs for adjusting energy, and a CNC-manufactured 7075 aluminum backplate. The valve, paired with a threaded cap, replaces the original plastic valve in the nozzle and is compatible with many market-available GBB weapons. Energy reduction is achieved by inserting more PTFE washers (2x 1mm, 1x 1.5mm) between the valve and the threaded cap. Unlike O-ring systems, our valve remains stable at high energy levels due to the constant length across the PTFE discs. Normal shim discs with a 4mm inner diameter can be used for further energy reduction or finer adjustment. An optional, robust 7075 aluminum backplate is included, but if your GBB has a nozzle with a steel pin, it's not necessary as the pin is more durable than a built-in plastic backplate.

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