Complete redesign of the classic version 2 gearbox for AEGs. The EG Hard Gearbox Shell has been designed from the ground up to solve many of the issues of past designs.

• New split panel design makes maintenance and custom builds much easier!

• Quick change spring system and included ball bearing spring guide.

• CNC Aluminum lower panel for the gearset.

• Upper panel for the compression unit.

• Shimming is now faster and easier.

• Labeled shell for quick reference of screw size and part orientation. 

• Pre-radiused front and rear.

• Overlapping panels to keep your parts from shifting, and maximizing your shimming.

• External wiring, no more pinion gear issues!

• High strength, reinforced main shell passed our 100,000 round test under heavy loads.

• Interior shell is Teflon coated for easier operation of your gears and compression parts.

●The top portion of the gearbox is now a single piece vastly increasing the strength of the top of the gearbox where most version 2 gearboxes often crack.

■Brand: Prometheus

■Included
・EG Hard Gearbox Shell
・Ball Bearing Quick Change Spring Guide
・M3x16 Screws x3
・M3x8 Screws x6
・Cut off Lever screw x1
・Trigger Unit Switch Screw x1
・Handgrip Screws x4

■Model Type:
・8mm

■Compatibility:
・Tokyo Marui Standard Ver.2 AEGs
・Tokyo Marui Specification Ver.2 AEGs

This gearbox shell is designed around Tokyo Marui specification AEGs, so modification may be required to install it into off-spec guns, be aware that the shell is not 100% compatible in all cases.
Intended for advanced users and may require modification.

This is a version 2 gearbox shell only, included only spring guide, not included other internal parts