Prometheus Spring Guide Versions 2 & 8 Ninja Airsoft KWA KMP9 NS2 Series Breech

KWA KMP9 NS2 Series Breech Base

Holster release is a smooth easy button for quickly drawing

Fits in all M4 and M16 style airsoft AEGs

Please note there is no manufacturer's warranty or returns on drum magazines due to them being finicky

Easy to pour bottle for reloads

Prometheus Spring Guide Versions 2 & 8 Ninja Airsoft KWA KMP9 NS2 Series BreechThe 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.