Kompletny Gearbox Limitowana Edycja Rocket Edge II High Cycle V2 [APS]

The gearbox was fairly easy to install in a bunch of other lower + upper combos, including a G&G lower and a CYMA MK47 lower.

Various aftermarket M4 uppers fit nicely but the gearbox comes with a "patent pending" slide that mimics a bolt. I had to remove this as my airsoft guns have one of their own attached to the charging handle, however, it fit nicely in the G&G.

Small issue trying to get the gearbox locking pin in after fitting it, the big back pin fit well and very easily, however the small pin that's about in the middle, above the trigger, had very small issues and it took me around 2-4 minutes to fit it properly in a CYMA lower.

The rear wiring has a rubber coat encasing all wires together. This was too thick where my buffer attaches and I had to remove it with a sharp tool, otherwise I could not fit a buffer tube. Please be careful when doing this.

The battery connector is VERY tight. 3 different batteries have had the same fit and it lead me to decide that I will not be fully connecting batteries until it wears out a bit. If you have a spare connector, you can easily use your own as the gearbox comes with the connector NOT attached, as you have to attach the fuse wiring first, and then and then the battery end.

Comes with a decent motor, 31K, no complaints.

On a 7v 15c battery I get around 22-24~~ RPS from my rifle, averaging 250-270 fps. Please note that this varies based on the hop rubber I used and barrels, I use a rather long barrel for this kind of setup (14"). An 11v battery gets it to around 30~ +- 4 RPS.

Overall, the platform has really good stability/consistency, comes with a quick spring change port. The gearbox sounds good out of the box, is not too whiny and is shimmed properly.