Regular v2 gearbox in classic army sr25
 

Hey my ca25 gearbox recently cracked and i am wondering if its possible to use a regular gearbox in the classic army sr25 receiver, and still use the same mags, and a standard m4 hopup, what do i need to make this happen? please lemme know

Buy a regular gearbox shell and then buy a SR25 cylinder head and nozzle from G&G.