Check This Out
Here is a pic of my Yugo bullpup. I clipped and crowned the barrel immediately behind the launcher, and there are no other mods to the rifle itself.
I have run about 50 rounds through it with no jams and no problems at all except one slam-fire, which I caused. Duh!
I was trying for the Tommy gun look with the stock. It is made of mahogany, and is still in the prototype stage, but it IS fully functional, and is just my size and feel. There is no balance problem at all, and aiming with the red dot or 4 power scope is really a breeze.