AEG Type 120 Newton Spring SP-WADNS-WYS010-BK this piston works perfectly with

this piston works perfectly with inner barrels from 310 mm to 510 mm

You can manually focus and adjust for your eyesight using the built-in diopter settings

Adjustment may be required as the condition of each airsoft gun may vary

Compact airborne-style latch

This airsoft product is manufactured under authorized license from Fortis Manufacturing

AEG Type 120 Newton Spring SP-WADNS-WYS010-BK this piston works perfectly withAEG power spring with a non linear design and black coating, delivering 120 Newtons of force when compressed to a length of 62 mm. For use in the MDRX AEG. Depending on the type condition of the battery and the ambient temperature, it may be necessary to disable the battery protection for proper operation. SBA SPR 1120