Airsoft Spare Parts E&C 8mm QD Transformar M4 M16 Serie AEG V2 Caja de cambios Versión 2

- Make sure this fitsby entering your model number. - Made out of metal material. - Easy power upgrade system. - Quick release spring and spring guide for easy power adjustment / spring replacement. - Weight - Approx 350g - Go to the middle of the page to read the complete Product Description. - Made out of metal material. - E&C 8mm QD Transform GearBox Shell Version 2 for M4 Series. - Essential part for upgrading your Airsoft Electric Gun AEG. - Easy power upgrade system. - Quick release spring and spring guide for easy power adjustment / spring replacement. - Include 6pcs ball bearing and spring guide. - Weight - Approx Approx 350g - Original Packing