This compact GBB also comes with a small and large interchangable back straps and three extra fill port O-rings

and provides the perfect amount of lightweight feel and a pop of color for your build

With a fully adjustable hop-up and blowback action

and include a reinforced shooting finger and neoprene wrist closure

Descriptions: This type of gear set is used for replacing the original one

Jack™ HPA Conversion Kit M4 KWA This compact GBB also comesThe JACK was designed to answer the demand for an affordable, high performance HPA (High Pressure Air) conversion for AEG's. The system is a drop in cylinder replacement that is universally compatible with a wide range of gearbox versions that have center line nozzles.