Waldo Dynamics | Crimson NPAS for VFC - APFG - Maruyama GBBR

The Waldo Dynamics Crimson NPAS is an adjustable Non-Power-Affecting System (NPAS) for VFC-platform GBBRs, including APFG and Maruyama variants. It replaces the stock NPAS, so you can set your power output and get more stable, repeatable FPS across a wide range of temperatures and gas pressures.

That makes it easier to stay inside field limits and to tune for cold-weather play, without sacrificing cycling.

Fits: Most VFC-platform GBBRs, including APFG and Maruyama variants. For the VFC MP5, use the Guillotine MP5 NPAS instead; the Crimson is not optimized for that platform. Prefer a different valve for your VFC? See the CLPD Clarence Projects Design NPAS for VFC.

In the box: 1× Waldo Dynamics Crimson NPAS valve

Tip: Snug the valve threads; do not overtighten. Re-chrono after install and when the weather changes.