the removable portion 13 has male threads 131 on the outer surface 132 thereof and the female threads 121 male threads 131 are enable to engaging with each other thus when the pneumatic container 1 need to be recharged the removable portion 13 is removed from the pneumatic inlet 12 for allowing the recharging of the compressed gas or air into the pneumatic container 1 through the pneumatic inlet 12 without disengaging the pneumatic container 1 from the paintball gun accordingly when the recharging is done the removable portion 13 is received in the pneumatic inlet 12 by engaging female threads 121 male threads 131 for seal and contained the compressed air gas in the pneumatic container 1 although it is not illustrate in fig1 the pneumatic inlet 12 could also be disposed on the bottom end 103 rather than the lateral end 102 of the container body 10 or could be disposed on both of the bottom end 103 and the lateral end 102 alternatively other engaging elements such as rubber stoppers for the above engagings could be applied in the present inversion please refer to fig2 a schematic exploded diagram for a pneumatic recharging system for a paintball gun according to a preferred embodiment of the present application is provided as show in fig2 the pneumatic recharging system 2 for a paintball gun or a marker not shown has the pneumatic container 20 one adaptor 21 and one blocker 22 in practical the pneumatic recharging system 2 should have two adaptors 21 and two blockers 22 nevertheless.