AIP O-Ring (FKM) For Aluminum Blowback HousingDesign for Blowback Housing Piston head As always, upgrading GBB require necessary skill & technique, consult expertise if needed Major Color : Green Built Material : FKM Item# AIP014 FKM

Oil resistance / bore up size for better seal

Item# SIL-13A/B

- Suitable for Marui/GM G17/19/22/34 G-Series

folding back up iron sight that can be locked in the upright position with a small set screw

Design for Tokyo Marui

- Special pressure point geometry reduces inconsistency between shots for more predictable trajectory

- Replace original output valve

- Fit for Tokyo Marui G17/ G18C / G34 Airsoft GBB Series

5 mm Inner Barrel

- suitable for Marui G17/G18C GBB Series

The rear serrations are called DNA collectors because it's really sharp and could graze your hand but no real harm is done

- RMR style Dot Sight x 1