VFC UMP

VFC UMP GBBR Parts UK

Upgrade and tuning parts for the VFC / Umarex H&K UMP gas blowback rifle. Waldo Dynamics NPAS power valves and quick-change nozzle spring plugs to tune power and reliability on your VFC UMP GBBR.

An NPAS valve lets you set the UMP's muzzle energy precisely — ideal for keeping a snappy but chrono-legal GBBR.

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Waldo Dynamics - Crimson NPAS for VFC / APFG / Maruyama
Waldo Dynamics Crimson NPAS, a red negative-pressure adjustment system nozzle unit with stainless adjuster screws, for VFC, APFG and Maruyama gas blowback rifles
Waldo Dynamics Crimson NPAS nozzle shown horizontally, in red, with the nozzle opening and stainless adjustment screw visible
£9.99

Waldo Dynamics - Crimson NPAS for VFC / APFG / Maruyama

Waldo Dynamics - VFC Quick-Change Nozzle Spring Plug (FAL/AK/FNC/UMP)
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VFC Quick-Change Nozzle Spring Plug - FAL/AK/FNC/UMP
£4.49

Waldo Dynamics - VFC Quick-Change Nozzle Spring Plug (FAL/AK/FNC/UMP)