Natech Custom Airsoft Solutions has on sale their routing kit made specifically for Gen 3 Fusion Engines from PolarStar Airsoft... "Kit contains the redline plate connect, along with the 90 degree fitting required to route your line to the rear inside the fusion engine. This fitting is required to use the plate connect! The Redline M4 Plate Connect combines the comfort of having your Engine hose routed to the rear along with the convenience, ease of operation and secure hose connection of our Grip Connect.

The Plate Connect uses a specially made ambi sling plate that is drilled and tapped at a 20 deg. angle to mount our custom quick connect nipple. The nipple has an internal o- ring that seals on the hose."