The Springfield Armory Hellcat Pro OSP Compact is a striker-fired 9mm pistol with a 3.7-inch barrel and 15+1 capacity. The OSP designation means the slide is cut for direct optics mounting without an adapter plate. 
 
Key Specifications 

• Brand: Springfield Armory 
• Model: Hellcat Pro OSP Compact 
• Caliber: 9mm Luger 
• Action Type: Striker Fire 
• Capacity: 15+1 rounds 
• Barrel Length: 3.7 inches 
• Overall Length (OAL): 6.60 inches 
• Weight: 21 oz (1.3 lbs) 
• Frame Material: Polymer 
• Slide Material: Steel with Black Melonite finish 
• Grip Texture: Adaptive Textured 
• Sights Configuration: Tritium Front & Tactical Rack U-notch Rear 
• Safety Feature: Dual-Hand Operable Manual Safety 
   
  Features 
  At 6.60 inches overall and 21 oz, the Hellcat Pro sits between a subcompact and a full-size, fitting most carry holsters comfortably. The 15+1 capacity is high for the size class. The tritium front sight combined with the tactical rack U-notch rear sight enables target acquisition in low-light conditions. The Black Melonite slide finish is corrosion-resistant. Adaptive grip texture maintains control during shooting. The dual-hand operable manual safety suits both right- and left-handed users. 
   
  Usage 
  Concealed carry is the primary role. The OSP optics cut allows direct red dot mounting for shooters who prefer a dot at this size. Home defense and range work are also practical given the 15+1 capacity.

The Springfield Hellcat Pro OSP 9mm draws strong reviews overall, with a few recurring points of friction.

The compact size is the top draw. Owners who carry daily appreciate that the Hellcat Pro is manageable to conceal while the 15+1 capacity beats many competitors in the same size range. Accuracy and reliability at the range are praised consistently, with controllable recoil noted as a positive for a compact 9mm.

The OSP optics-ready design is a highlighted feature. Owners who want to run a red dot find the direct-mount configuration cleaner than adapter plates.

The trigger pull is the most common complaint. Some owners find it heavier and less crisp than competing pistols. Price sits on the higher end of the compact carry segment and comes up as a consideration for budget-conscious buyers.

Holster availability is noted as occasionally inconsistent due to the pistol's specific dimensions. Extra magazines are also mentioned as sometimes hard to find and more expensive than aftermarket options for competing platforms.

A few owners note the Hellcat Pro is slightly larger than true subcompacts like the original Hellcat, which is worth knowing for buyers expecting the smallest possible footprint. Overall the reception is positive for a carry-focused compact with high capacity.