For this reason we recommend always using ULTIMATE® cylinder parts and not combining or mixing with other upgrade parts as this can affect the result and performance of the upgrade

Higher torque to weight ratio

which helps eliminate feeding issues for high speed builds

Quick focus eyepiece

ASG Version 6 Cylinder Head Airtech For this reason we recommendThe ULTIMATE Upgrade Series cylinder head have been CNC manufactured in machine aluminium and thereafter anodized with a colour code for easy recognition. The heads have been designed with double rubber seals to minimize loss of compression from the cylinder. The special trumpet design ensures optimal delivery of air to the barrel BB. Furthermore, the cylinder heads have a powerful built in rubber band that absorbs the shock from the piston head.