Disassembly of the barrel

After opening the cover, move the selected lock to the left. You may have to tap it with a tool lightly.

And that's it. Basically the barrel is free. It must be pulled forward. We helped ourselves with a rubber hammer (you can tap on the carrying handle) and a flat screwdriver, which gradually increased the gap in the place where the barrel touched the receiver (the red arrow).

Maybe more vividly - the lines indicate the places where the gap will appear.

Exchange of the HopUp bucking

Both barrels are still together right after removing them from the receiver.

The red arrow indicates the position of the connecting screw (counteracting the outer barrel in the holder). The yellow ones, in turn, are the places where the set screws holding the HopUp chamber itself were screwed in.

Disassembled external barrel. The HU chamber with the inner barrel is still in the holder.

The chamber removed from the inner barrel - after removing two set screws (yellow arrows above). A poorly visible one narrow port, through which the screws enter and allow the spring pressing the chamber against the gearbox to work.

Here you can clearly see the port. The other one is on the opposite side of the HU chamber.

Disassembled o-ring holding the adjustment ring itself.

All parts of the chamber.

Taking out the gearbox

To remove the gearbox, it is necessary to remove the barrel first in the manner described above.

Top view of the gearbox in the receiver without a barrel and HopUp chamber. For better clarity of the photo, the receiver cover and the barrel lock were also removed.The next step is to disassemble the yellow HU chamber socket. Unscrew the screws marked with red arrows.

Next - unscrew two screws holding the gearbox to the bottom of the receiver.

The frame is free - you can now pull it out of the receiver, but watch out for the wires - it's easy to cut them on the sharp edges.

Some other details

The flash hider

The barrel lock.

The external barrel with the jacket disassembled.

The receiver and its cover.

The gas valve.

The magazine mechanism.