As SIG has done with the P365 before it, Springfield has built on the success of its Hellcat micro-compact pistol, making the basis of an entire platform including bigger models, with more capacity and more features. The latest iteration in this process is the Hellcat Pro OSP with a threaded barrel. This version gives you a slim, concealable optic-ready handgun with a full 15+1 rounds of capacity that can do damn near anything you want a semi-automatic handgun to do.