This is just a mockup right now on another of my GSG16-9s.
I found someone selling a GSG522 conversion with the MP5K cocking tube in town. I call it the GSG16K lol
I need to get a real looking shorter fake suppressor and finish the mounts for the MLOK. Other than that, this thing is pretty much ready to go
It feels awesome to hold with the aluminum front grip! Compact and held tight to body
The stock is all steel, aluminum and polymer and has been modified to no longer retract. Still clears the N/R length requirement. I wanted to use this stock on a 16"barrel model but it is based on a real MP5 receiver that uses narrower tracks for the arms. It felt sloppy when adjusting so there is not loss to making it fixed.
I'll post up more photos when complete.