The Springfield Armory Hellcat Pro Comp OSP is a 9mm semi-automatic pistol with a 3.7-inch barrel and a built-in compensator in the slide. The compensator vents gas upward to reduce muzzle rise, which matters on a compact pistol where the shorter grip gives less leverage to control recoil. The OSP designation means the slide has an optics cut for direct-mount red dot sights. 
 

Key Specifications 

• Brand: Springfield Armory 
• Model: Hellcat Pro Comp OSP 
• Caliber: 9mm Luger (9x19 Para) 
• Action: Semi-Automatic 
• Barrel Length: 3.7 inches 
• Overall Length: 6.6 inches 
• Capacity: 15+1 rounds (two magazines included) 
• Weight: 21 oz. 
• Finish: Black Melonite 
   

Features 

 
The Hellcat Pro Comp has a 15+1 capacity in a 6.6-inch overall package, which is competitive for a compact carry pistol. The Melonite finish covers the slide and barrel for corrosion resistance. Tritium front sight and tactical U-notch rear sight handle low-light visibility without requiring a light. The optics cut accepts multiple common red dot footprints. 
 
The built-in compensator is integrated into the front of the slide, keeping the overall length compact while still providing some muzzle rise reduction. Two magazines are included.

Owners of the Hellcat Pro Comp OSP are generally satisfied with its concealability-to-capacity ratio -- 15+1 rounds in a pistol this size is a common point of praise. The ergonomics get positive feedback, with most users finding the grip comfortable and grip angle natural. Reliability is described as good across range use with standard defensive ammunition.

The compensator generates discussion. Carry users appreciate the muzzle control improvement. Some shooters note it adds some noise and blast at indoor ranges. The optics cut is well-received by users who want to run a red dot without modifications.

Trigger feedback varies: some find the break clean and the reset short enough for fast shooting; others wish for a lighter pull. Pricing draws comparison to similar compact 9mm pistols, with some buyers considering alternatives at lower price points. Aftermarket holster availability is adequate given the pistol's popularity.