The PTS MEC R-Type piston head is designed specifically for Tokyo Marui gas blowback (GBB) pistols, including models such as the TM PX4, FN 5-7, G17 Gen.4, and G19, as well as WE G17. This piston head utilises a distinctive revolver-cylinder-front-view design made from brass, enhancing durability compared to the stock component.
Equipped with six air intake holes and three sizes of O-rings (red, black, and green), the piston head improves airtightness and air sealing for more consistent performance. The included O-rings fit bore diameters ranging from 13.5mm to 14.5mm, offering suitable options for different setups.
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