That PSE is a few years old...!
I've thought about buying one of those...just for the fun of it...haven't done it yet.

One thing about most crossbows...they ARE noisy.

There are several rubber goodies to bond to the limbs and or stock.
I've tried a couple and have come to like the Bowjacks brand of silencers.

BUT...no matter what brand you use...do not...expect a quiet crossbow!

Mike