Side mount plenum made for the Umarex Zelos/Snowpeak m60. Plenum has a volume of 18cc. FPS gained will range from 20-40fps (depending on tune/projectile/caliber). It will come with the necessary washer seal/orings along with shims to clock them properly. You will need to source your own 1/8 bspp gauge that is 25mm or smaller diameter for it to fit. They are machined from 6061 T6 and blk anodized. Made in the USA.
Note: you will need to source a 25mm or smaller diameter 1/8 bspp gauge