Asking $20 plus shipping for all parts. Well cared for (hardly even used). Thread adapter lets any 14mm- suppressor or flash hider work. I will try to include all necessary parts of the hop up but I can’t guarantee it because it’s been a year or two since I’ve had this out of the gun. But for $20.... you can’t really go wrong for a spare hop, inner barrel, and outer barrel with a 3rd party thread adapter!