Specna Arms CORE V2 gearbox shells - with bearings

Specna Arms CORE™ V2 gear box shells with quick spring change feature . This highly durable gear box is designed specifically for Specna Arms CORE™ series electric guns equipped with Ver2 gear box. The gear box is equipped with the ESA™ Quick Spring Change System quick spring change feature. Reinforcement filings are ready at the front end of the gear box. The reinforcement filings distribute the impact force of the piston more evenly over the entire front end area, thus improving the durability of the gear box. 8 mm plain bearings are supplied with the gear box .