Prometheus Spring Guide Versions 2 & 8 Ninja Airsoft 412mm inner barrel length which

412mm inner barrel length which is quite long for such a compact AEG

It allows equal comfort for

Holster release is a smooth easy button for quickly drawing

1v 1000mAh Stick Lipo Battery (LiPo)

Fits in all M4 and M16 style airsoft AEGs

Prometheus Spring Guide Versions 2 & 8 Ninja Airsoft 412mm inner barrel length whichThe Prometheus spring guide for ver. 2 gearboxes is a necessary upgrade for those looking to upgrade their version 3 AEG. The spring guide features hardened steel ball bearings at it's base that allows the spring to rotate more freely inside the gearbox, this releases tension that may build up in the spring, reduces the risk of spring breakage, and allows the motor to run more efficiently.