The Springfield Armory Hellcat RDP is a 9mm micro-compact semi-automatic pistol with a 3.8" barrel, 13+1 round capacity, and a patented SelfIndexing Compensator. It weighs 19.4 oz. (approximately 1.2 lbs.) with a black polymer frame and Melonite steel slide. 
 

Key Specifications 

• Manufacturer: Springfield Armory 
• Model: Hellcat RDP 
• Type: Semi-Auto Pistol 
• Action: Double Action Only (DAO) 
• Caliber: 9mm Luger (9x19 Para) 
• Barrel Length: 3.8 inches 
• Capacity: 13+1 rounds (includes one 11 rd. and one 13 rd. magazine) 
• Weight: 19.4 oz (approximately 1.2 lbs.) 
• Finish: Black Polymer Frame with Melonite Steel Slide 
• Sights: Tritium front sight and U-notch rear sight 
   

Detailed Features 

The SelfIndexing Compensator is patented and installs or removes without losing zero, which allows switching between compensated and standard configurations cleanly. The slide has an optics-ready cut for direct red dot mounting. Tritium front and tactical U-notch rear sights give usable low-light visibility without an optic. The adaptive-textured polymer grip provides secure purchase in wet conditions. An ambidextrous manual safety supports both right- and left-handed operation. 
 
The Hellcat RDP ships with both an 11-round and a 13-round magazine. The 3.8" barrel is longer than most micro-compact pistols, contributing to slightly better velocity and a longer sight radius within a still-compact package.

The Springfield Hellcat RDP draws positive feedback overall, particularly for its capacity and the compensator's effectiveness.

The 13+1 magazine capacity in a micro-compact is the most consistently praised aspect, as it surpasses most comparably-sized pistols. The compensator measurably reduces muzzle rise during rapid fire, which owners note makes follow-up shots noticeably faster to control. The grip texture is comfortable and secure.

On the critical side, the compensator raises valid questions about holster compatibility. Not all micro-compact holsters accommodate the added length and diameter at the muzzle, so holster selection requires attention. Some users find the trigger adequate but not as crisp as competing options in the category.

Price is noted as above average for micro-compacts. A few users mention a break-in period before achieving peak reliability, which is worth knowing for buyers expecting immediate out-of-box performance.

Aftermarket accessories for the Hellcat platform are more limited than for established brands like Glock, though the lineup continues to expand. Overall owner satisfaction is high for those who want an optics-ready carry gun with a compensator already fitted.