SPECNA ARMS Reinforced gearbox shell V2 with 8mm bearings

Gearbox V2 shell with the option for a rapid spring replacement, which helps to accelerate the upgrade process. Fabricated from a metal alloy. In the front, the gearbox has received considerable additional reinforcement so that it would be more durable. Included in the kit are QSC sprin guides with bearings, as well as 8mm bearings, and assembly screws.