A sturdy gearbox skeleton designed for mounting in Umarex HK 417 replicas. The skeleton is made of exceptionally strong EN AW 7075 T651 aluminum. It features the QSC (Quick Spring Change) system, whichóry allows for quick spring replacement. It comes with a set of mounting screws and an aluminum bearing spring guide.Technical data
Material: aluminum EN AW 7075 T651
Color: silver
Bearing socket size: 8 mm
Weight: 115 g
Manufacturer: Retro Arms.
