Just like the other series, Specna Arms® CORE line is equipped with a quick spring change system. There is no need to take the gearbox out of the replica in order to exchange the spring or adjust the muzzle velocity to the required value. All you have to do is to disassemble the buffer tube by unscrewing just one screw, spin off the pin with the spring guide and change the spring.

The whole operation takes about one minute and requires only a screwdriver.



Orion gearbox is a result of several years of Specna Arms experience in the field of internal parts. This product stands for reliability, durability and battle-tested solutions from the top shelf.Steel gears and tooth rack along with reinforced gearbox shell provide the higher level of durability for stock spring as well as further, power tuning.