Complete O-Ring and Screw Set, JACK - HPA System 40 max Its gearing and spring setting

Its gearing and spring setting ensures a decent firing speed

1 x Buffer

Short Barrel Version

the gel blaster provides added convenience for players to seamlessly change and fine-tune their equipment

Complete O-Ring and Screw Set, JACK - HPA System 40 max Its gearing and spring settingComplete O Ring and Screw Set, JACK Complete o ring set for all versions of the JACK with the exception of the MP7 variant. Plug screw included. 1x M1. 5 x 6. 5 (Buna 70) Front Outside of Nozzle 2x M1. 5 x 9. 5 (Buna 70) Rear Outside of Nozzle 1x M1. 5 x 19. 5 (Buna 70) Thread Relief of Front Cylinder 1x M1. 0 x 18. 5 (Buna 70) Captured Between Front Cylinder and Donut 3x M1. 0 x 5. 0 (Buna 70) Two on Nozzle Stem & One Inside of Nozzle 1x M1. 0 x 2. 5