CNC airsoft gearbox M249/PKM – QSC
Remade and upgraded CNC gearbox from Retro ARMS with new suffix “7075 series”.
Gearbox for airsoft machine gun M249 and PKM is completely milled at CNC machining center. Compared to other aluminium gearboxes, our is made out of solid block of aluminium AW EN7075 T651. It is not casted like Chinese brand ones! Our gearbox is tested wit M160 spring without any signs off wear or breaking. It is recognizably reinforced all over. Gearbox’s surface is decoratively anodized.
Both halves fit together with absolute precision including bearing holes, which are 100% co-axial.
It’s made with slots for 8mm bearings. Bearings and spring guide are not included.
Gearbox is equipped with quick spring change system – QSC. Standard spring guide can be used, or you can choose our CNC one.
Gearbox can be equipped with standard Hop Up Chamber, or you can use our CNC one. Retro ARMS CNC Hop Up Chamber can be attached to gearbox by two screws. It will ensure that it will stay in proper place during firing compared to standard one.
Further small features:
accurate hole for Anti-Reversal Latch – it doesn’t fall out
micro grooves on pin, which holds tappet plate spring – springs doesn’t jump out
Package includes 1 x gearbox for M249/M60, strength screws and Retro ARMS sticker.
Gearbox comes with lifetime guarantee against cracking. It doesn’t relate to breaking caused by misused parts, e.g. improper cylinder head.
We try to adjust our gearboxes as much as possible to allow use of the widest variety of part brands. However we still recommend to use Retro ARMS spare parts, because they are the most compatible. We can’t guarantee 100% compatibility with spare parts from others.
Gearbox installation requires technical knowledge and skills.
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