4UAD Friction Pro Bucking & Nub AEG or GBB:AEG It is safe to use

It is safe to use a Metal Piston head with this cylinder head

i Installed Real Deal CNC Steel Bushings and bonded them with a special metal glue

breaking the seal

Real Deal Ultimate Piston Assembly with New Piston Head $42

real Deal Future Gen Piston Head $15

4UAD Friction Pro Bucking & Nub AEG or GBB:AEG It is safe to useThe all new Friction Pro Hop Bucking by 4UAD Industries Applicable for virtually all FPS Velocities and BB Weights Compatible with standard AEG hopups and barrels Designed to create perfectly centered axis of spin for ultimate consistency Unique contour of the contact patch allows the lift of heavier BBs up to 0. 48g Minimized contact surface to eliminate error Flat, consistent and accurate trajectory! Improve accuracy, range, and groupings Designed