So I couldn't bring myself to pay $60 for a padded stock for my dummy launcher. Instead I opted to make on myself.
You will need....
About 2' of 1.5" PVC
One 1.5" PVC T joint
A piece of para cord or string
Very simply, cut an 8" long channel in the PVC starting around the bottom of the handle and descending just past the length of the handle when drawn.
Tie a string to the knob on the end and feed it through the channel.
Tie a knot or handle loop in the para cord so it won't fall into the pipe.
Glue the T joint to the bottom of the PVC