The ProMag SPRA16 extends Springfield Hellcat capacity to 17 rounds while maintaining reliable feeding and positive lockup. This steel-bodied magazine transforms the compact Hellcat into a higher-capacity platform without compromising concealability.
What Makes This Different
Unlike polymer alternatives, the SPRA16 features a steel body construction that resists deformation under pressure and provides consistent spring tension over thousands of loading cycles. The magazine extends below the grip frame by approximately 1.2 inches, adding substantial capacity while maintaining a manageable profile. Heat-treated steel components ensure dimensional stability across temperature extremes from -20°F to 140°F.
Key Features
- 17-round capacity increases firepower by 6 rounds over standard Hellcat magazines
- Steel body construction with heat-treated components for long-term durability
- Anti-tilt follower design prevents nose-diving and ensures reliable feeding
- Polymer baseplate with lanyard loop for tactical applications
- Witness holes at 5, 10, 15, and 17-round marks for quick capacity checks
- Compatible with all Springfield Hellcat variants including OSP models
- Flush-fit floor plate maintains clean lines despite extended capacity
Field testing demonstrates consistent cycling with both 115-grain FMJ and 147-grain hollow point ammunition across multiple Hellcat pistols. The extended magazine proves particularly valuable for competition shooting where reload frequency matters, and for duty applications requiring maximum on-board ammunition. The steel construction maintains spring tension after 5,000+ loading cycles, significantly outperforming polymer magazines in durability testing.
Technical Specs
- Capacity: 17 rounds of 9mm Luger
- Body Material: Heat-treated steel with black oxide finish
- Overall Length: 5.2 inches
- Width: 0.95 inches
- Weight: 4.1 ounces empty
- Compatibility: Springfield Armory Hellcat, Hellcat OSP
- Spring: Music wire with polymer follower
- Country of Origin: USA
The SPRA16 represents the optimal balance between increased capacity and maintained concealability for Hellcat owners. Professional gunsmiths recommend this magazine for users prioritizing reliability over the lightest possible weight, making it the logical choice for serious defensive applications.