The Springfield Armory Hellcat Pro Comp OSP is a 9mm striker-fired pistol with a 3.7-inch barrel and an integrated compensator in the slide. This variant ships with one 15-round flush magazine and one 17-round extended magazine. The OSP slide has a machined optics cut for direct red dot mounting without an adapter plate. 
 

Key Specifications 

• Brand: Springfield Armory 
• Model Name: Hellcat Pro Comp OSP 
• Caliber: 9mm Luger 
• Action Type: Semi-Auto (Striker Fired) 
• Barrel Length: 3.7 inches 
• Overall Length: 6.6 inches 
• Capacity: 15+1 rounds (includes one 15-round and one 17-round magazine) 
• Weight: 21 oz. (flush magazine) / 21.4 oz. (extended magazine) 
• Finish: Black Melonite on slide and frame 
   

Features 

 
The integral compensator vents gas at the muzzle to reduce muzzle flip on follow-up shots. At 6.6 inches overall and 21 oz., the pistol is sized for carry while still providing a full grip. The adaptive grip texture is aggressive enough for a secure purchase in most conditions. The sights include a Tritium/Luminescent front with a Tactical Rack U-notch rear for low-light use without activating a flashlight.

General opinion on the Hellcat Pro Comp OSP is positive, with concealed carry users specifically noting the 15+1 capacity in a package this compact. The optics-ready slide is well-received -- mounting a red dot without gunsmith work appeals to users who run optics. Reliability with standard loads is described as consistent across range sessions.

The ergonomics get good marks for grip comfort. The integral compensator reduces muzzle rise noticeably for many users, though some note it comes with more muzzle blast and noise at indoor ranges compared to a non-compensated pistol.

Criticisms include recoil management for newer shooters (compact pistols amplify felt recoil generally), trigger pull and reset preferences that vary by shooter, and inconsistent customer service experiences reported in some discussions. Price comparisons to similar compact 9mm pistols also come up.