If you own DX9 Carry, then you know he is unable to hold his Targetmaster rifle properly. It's just too long, and there is no room for the stock. I rectified that by making this adapter. But I went one step further and made it so it is also a handgun similar to one of Hot Rod's G1 guns. Furthermore, the barrel from the Targetmaster fits on the tip of this adapter also. There is an optional piece that will tab on top to cover the hole when used without the targetmaster. And it also tabs on bottom for storage when being used with the Targetmaster.
The optional cover is here:
https://www.shapeways.com/product/7JJ5A74NB