The muzzle brake is fixed. Non removable.
At this time we do not have a adapter for this airgun. I have made a prototype for a customer to see if it would be a good idea to thread aluminum to plastic.I personal do not recommend threading a suppressor to a part that is not solid enough to support a aluminum suppressor. At this time I will not be making custom adapters for this airgun unless you remove the whole factory suppressor from this airgun. I feel more comfortable mounting directly on the barrel it self.