[Techspy]

Bought this when getting parts together for my g36 conversion and decided to go with the ACR stock. No internals, just as you see in the picture. $275 shipped OBO.

 

[omega21]

Is there any way to make this work with a USC to UMP conversion? Or is this totally incompatible with a USC?

 

[Techspy]

Not that I am aware of. I have the UMP conversion as well with the ACR stock and don't see a way to make it work without a lot of custom fabrication.