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Gearbox version III is completly milled at CNC machinining center. Compared to other aluminium gearboxes, our is made out of solib block of aluminium AW EN7075 T651. It is not casted like Chinese ones! Our gearbox is tested wit M160 spring without any signs off wear or breaking long term. Gearbox's surface is decoratively anodized.
It's available with slots for 8mm bearings. Bearings are not included. You can choose them from our offer here.
Gearbox is equipped with - QSC. Our CNC spring guide is included.
Both halves fit together with absolute precision including bearing holes, which are 100% co-axial.
Further small features:
Package includes 1 x gearbox version III, 1 x screw M2.5 x 3, stainless steel screws, CNC spring guide and Retro ARMS sticker.
Gearbox comes with lifetime guarantee against breaking. It doesn't relate to breaking caused by misused parts, e.g. improper cylinder head.
We can't guarantee 100% compatibility with all AK type bodies, but gearbox will fit into standard and common brand's bodies without larger modifications.
We try to adjust our gearboxes as much as possible to allow use of the widest variety of parts possible. However we still can't guarantee fitment of all third party parts. We recommend to use Retro ARMS spare parts, because they are the most compatible.
Gearbox installation requires technical knowledge and skills.