I had an ultra for my boy, was impossible for him to cock, also had a falcon. We eventually settled on an S200 (The brocock wasn't around then and also shot count is low for a full HFT round)
I've cut the back off and not taken the silencer off, works a treat for him and he's quite a small 9 year old... still kicks some adult butt at the comps though
Here it is when I first blinged it up at full length
Here is is cut down and short enough for him to use comfortably
I've kept the piece I took out but will probably just by a custom stock once we're back to full length (or pass it on to another junior at the club)