The SPEED Piston Head pioneers the use of U-Cup rings, which have a much lower drag compared to regular o-rings. It also allows faster spring decompression and continuous air seal during the compression stage. 

The SPEED Piston Head eliminates the traditional porting holes in favor of a special milled face, which allows for the fastest way for air to get to the U-Cup ring, resulting in the best possible shot to shot consistency due to instant and continuous air seal. 

Weight reduction holes are also included to keep the mass even lower which is important for high speed AEGs. 

SPEED Piston Head with Ball Bearing for V2/V3 Gearbox 
CNC machined from USA grade billet aluminum Construction 
All tools are clear anodized for durability. 
Fully compatible with V2 and V3 AEG gear boxes.