Yes, but Hellcat RDP 3.8" barrel.I would say no based on my research.
Hellcat: 3” barrel
Hellcat Pro: 3.7” barrel
it will fit fine and shoot. but Springfields says the harmonics of the gun would be off? and as the poster under you mentioned, the RDP threaded is 3.8"I would say no based on my research.
Hellcat: 3” barrel
Hellcat Pro: 3.7” barrel
Just wondering if the Hellcat Pro barrel can be installed on to original hellcat?