Springfield Threaded Barrel with Compensator, 9MM, Fits Springfield Hellcat, 3.8, Self-Indexing Compensator, Melonite Finish, Black HC0901TB-KIT Springfield is proud to announce the 3.8" threaded barrel and compensator kit for Hellcat 3" Micro-Compact handguns. The barrel comes packaged with a Self-Indexing Compensator that reduces felt recoil for faster follow up shots