Yes, I have the RDP and have swapped out the barrel for the standard Hellcat Barrel to make it easier to carry for my EDC and it functions flawlessly. Now I am wondering what to do with the RDP threaded barrel and compensator. If I sell it how much should I ask?You are correct but guess what Springfield Armory will not sell you a barrel ! I think they should as I have an XDM 4.5. that came with a threaded barrel and I also wanted to purchase the Hell Cat Compensator and they wont sell that either . I wanted to buy the parts to up grade my Hell Cat to the RDP , Customer Service said the trigger group, barrel or comp is not yet available for sell .