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FX Panthera
Swapping this over from the factory valve will yield 40-50fps depending on caliber
5mm valve bore
Much easier to grab
Umarex Notos Plenum FX Panthera15cc plenum made for the Notos. With this modification you can expect a higher shot count fps. The shot count fps will vary depending on the tune. Orings are installed but it'll also come with spares (including factory barrel orings). The plenum will move the main air reservoir 45mm forward so you would need clearance. These are Gen2 plenums which has a slightly thicker wall and are also stackable. CNC machined from 6061 T6 and blk anodized right here
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