TAPCO Threaded Barrel for Springfield(R) Hellcat(R) Pro - Upgrade your barrel with the TAPCO Springfield(R) Hellcat(R) Pro Threaded Replacement Barrel. An easy-to-install barrel, simply just drop it in, no gunsmith or other modifications are required. All threaded barrels also include a thread protector. Includes an RDP Compensator Notch Fits Springfield(R) Hellcat(R) Pro 9 x 19 Match Grade 414 Stainless Steel Black Nitride Threaded 1/2 x 28 Includes Thread Protector Compatible with RDP Compensator