Description: The Bravo Aluminum Piston Head w/Thrust Bearings is designed to be used ith high velocity guns, stronger springs put more stress on the piston head as it impacts the cylinder head, which is why high strength aluminum is optimal for high velocity guns. Also, the thrust bearings are designed to reduce spring tension by allowing it to spin. Finally, this piston head is ported so air from the cylinder can push the o-ring out against the cylinder walls for maximum compression.
