Sound Suppression For Crossbow

[Typerri]

So iv been watching some vides on sound suppression for crossbows. I currently have non one mine and was thinking on adding some to it. From what I saw on the videos the kits didn't make much of a difference. Anyone have any suggestions of aftermarket kits that work? Also where to find universal string stops. I have a Carbon Express X Force blade xbow. Or anyone know of a site that sells carbon express xbow parts and accessories? Thank you