NEW model with improved teeth quality and tolerances.  Made of high grade polymer with a full steel tooth rack. Skeletonized piston body for extreme light weight, great for high speed setups.

Made of high grade POM featuring full steel teeth. Pre-lightened with 7 holes in the body making this piston extremely lightweight, great for high speed setups. 15T is a standard piston rack, 14T has the second (pickup) tooth removed to assist with correction of angle of...

Unlike traditional O-rings, X-rings seal better under pressure instead of blowing out. These X-rings are sized to provide a tight seal in standard cylinder sizes. We recommend sizing your cylinder to reduce internal friction as well. X-rings are compatible with...

7075 aircraft-grade aluminum construction, flat ported impact face for reduced wear on sorbo pads. Includes a set of washers and bearings to reduce torsional force on the spring. (6 holes, flat surface, sorbo friendly)

The LONEX POM Ventilation Ball Bearing Piston Head is a great cost effective high end replacement for your standard Airsoft AEG rifles piston head.  The LONEX POM Ventilation Piston Head comes with ball bearings that help relieve spring stress. This...

Works with Marui G17Oil resistant and high efficiency upgrade part for durability and consistent performance. Works with Marui G18C, G17 RMR slide , and Marui Strike WarriorOil resistant and high efficiency upgrade part for durability and consistent performance. Works with...

Features Durable polycarbonate (POM) construction Reinforced metal teeth Lightweight construction Drop in upgrade Prometheus is easily one of the highest quality aftermarket part manufacturers to this day. Based in Japan, Prometheus has continued to impress and outclass the competition. This...