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Promag
The ProMag HECA7 is a 20-round magazine designed specifically for the Heckler & Koch USC carbine chambered in .45 ACP. Built from a proprietary DuPont Zytel-based polymer, this magazine delivers reliable ammunition feeding and durable performance for shooters who want dependable capacity in their HK USC platform. Whether you're running drills at the range or relying on your USC for defensive duty, having quality spare magazines keeps you in the fight without interruption.
ProMag engineered the HECA7 with both longevity and function in mind. The polymer body and follower are engineered to withstand repeated use and environmental exposure, while the heat-treated Chrome-silicon wire springs provide the consistent pressure needed for smooth, reliable feeding every time you load up. This isn't a compromise magazine—it's a purpose-built alternative that lets you stock extra capacity without breaking the bank.
Made in the U.S.A., the HECA7 fits seamlessly into your HK USC and integrates with the carbine's magazine well without modification. If you shoot an HK USC in .45 ACP and want to maximize your magazine selection or simply need reliable backups on the range or in the field, this 20-round polymer magazine is a practical choice that delivers when it counts.
| Caliber | .45 ACP |
| Capacity | 20 rounds |
| Firearm Compatibility | Heckler & Koch USC |
| Material | Proprietary DuPont Zytel-based polymer (body and follower); heat-treated Chrome-silicon wire (spring) |
| Color | Black |
| Manufacturer | ProMag |
| Country of Origin | U.S.A. |
Yes. The ProMag HECA7 is engineered for the Heckler & Koch USC chambered in .45 ACP. It fits the USC magazine well without modification.
The body and follower are constructed from a proprietary DuPont Zytel-based polymer designed for long service life. The spring is heat-treated Chrome-silicon wire, which contributes to smooth and reliable feeding.
The HECA7 holds 20 rounds of .45 ACP ammunition.
Yes, the ProMag HECA7 is manufactured in the United States.
Promag
The ProMag HECA7 is a 20-round magazine designed specifically for the Heckler & Koch USC carbine chambered in .45 ACP. Built from a proprietary DuPont Zytel-based polymer, this magazine delivers reliable ammunition feeding and durable performance for shooters who want dependable capacity in their HK USC platform. Whether you're running drills at the range or relying on your USC for defensive duty, having quality spare magazines keeps you in the fight without interruption.
ProMag engineered the HECA7 with both longevity and function in mind. The polymer body and follower are engineered to withstand repeated use and environmental exposure, while the heat-treated Chrome-silicon wire springs provide the consistent pressure needed for smooth, reliable feeding every time you load up. This isn't a compromise magazine—it's a purpose-built alternative that lets you stock extra capacity without breaking the bank.
Made in the U.S.A., the HECA7 fits seamlessly into your HK USC and integrates with the carbine's magazine well without modification. If you shoot an HK USC in .45 ACP and want to maximize your magazine selection or simply need reliable backups on the range or in the field, this 20-round polymer magazine is a practical choice that delivers when it counts.
| Caliber | .45 ACP |
| Capacity | 20 rounds |
| Firearm Compatibility | Heckler & Koch USC |
| Material | Proprietary DuPont Zytel-based polymer (body and follower); heat-treated Chrome-silicon wire (spring) |
| Color | Black |
| Manufacturer | ProMag |
| Country of Origin | U.S.A. |
Yes. The ProMag HECA7 is engineered for the Heckler & Koch USC chambered in .45 ACP. It fits the USC magazine well without modification.
The body and follower are constructed from a proprietary DuPont Zytel-based polymer designed for long service life. The spring is heat-treated Chrome-silicon wire, which contributes to smooth and reliable feeding.
The HECA7 holds 20 rounds of .45 ACP ammunition.
Yes, the ProMag HECA7 is manufactured in the United States.
