Please note that sound moderators & silencers can only be sent from a dealer to another dealer, we are unable to sell these online or via mail order, so whilst you can reserve these products, you will need to either pop down to the shop with your valid Firearm Certificate if its for a moderator, with authority to purchase, or give us details of a local RFD who is willing to receive the item for you (usual cost is £25 for this service at you’re dealer) If you are collecting a silencer no proof is needed. If the item is to be sent to another dealer, please select the postage option at £25 and NOT collection. Postage cost to send the item is £25.00., Designed to fit the Air Arms S510 and TX200. Screws into the barrel shroud. IMG_20150109_105340 IMG_20150109_105359 IMG_20150109_105414 IMG_20150109_105422.