
Availability: In Stock
The Pro Mag H&K USP Full Size .45 ACP 12-round magazine is a solid capacity upgrade for shooters running the full-size Heckler & Koch USP platform. Whether you're prepping duty mags, stocking spares for the range, or building backup capacity for home defense, a reliable .45 magazine that holds an extra round makes a real difference in how often you're reloading. This stateside-made option gives you 12 rounds of .45 ACP firepower without breaking the bank.
Pro Mag engineered this magazine around durability and consistent feeding. The body is forged from heat-treated blued steel—material that stands up to repeated loading cycles and won't let you down when you need it. The follower uses a proprietary DuPont Zytel-based polymer, chosen specifically to resist wear and maintain its shape through thousands of rounds. The spring is heat-treated Chrome-silicon wire, the kind that resists fatigue and keeps tension steady whether the mag is full or sitting on a shelf for months.
Made in the USA, this magazine fits the full-size USP platform and delivers the capacity and reliability you expect from a purpose-built defensive or target load. It's the kind of no-frills, utilitarian gear that works—nothing fancy, just straightforward engineering that does the job.
| Caliber | .45 ACP |
| Capacity | 12 rounds |
| Firearm Compatibility | Heckler & Koch USP Full Size |
| Body Material | Heat-treated blued steel |
| Follower Material | DuPont Zytel-based polymer |
| Spring Material | Heat-treated Chrome-silicon wire |
| Country of Origin | USA |
This Pro Mag magazine is designed for the full-size Heckler & Koch USP platform in .45 ACP. Make sure you're running the full-size model, as compact variants require different magazines.
The follower is cast from a proprietary DuPont Zytel polymer that resists deformation and wear through repeated loading cycles. The spring is heat-treated Chrome-silicon wire, which maintains consistent tension and resists the fatigue that can cause feeding issues over time.
Yes, the Pro Mag H&K USP magazine is manufactured in the USA.
This magazine holds 12 rounds of .45 ACP ammunition.


SKU: 126513678 • Width: 3in • Height: 2in • Depth: 10in • Weight: 0.31oz





Availability: In Stock
The Pro Mag H&K USP Full Size .45 ACP 12-round magazine is a solid capacity upgrade for shooters running the full-size Heckler & Koch USP platform. Whether you're prepping duty mags, stocking spares for the range, or building backup capacity for home defense, a reliable .45 magazine that holds an extra round makes a real difference in how often you're reloading. This stateside-made option gives you 12 rounds of .45 ACP firepower without breaking the bank.
Pro Mag engineered this magazine around durability and consistent feeding. The body is forged from heat-treated blued steel—material that stands up to repeated loading cycles and won't let you down when you need it. The follower uses a proprietary DuPont Zytel-based polymer, chosen specifically to resist wear and maintain its shape through thousands of rounds. The spring is heat-treated Chrome-silicon wire, the kind that resists fatigue and keeps tension steady whether the mag is full or sitting on a shelf for months.
Made in the USA, this magazine fits the full-size USP platform and delivers the capacity and reliability you expect from a purpose-built defensive or target load. It's the kind of no-frills, utilitarian gear that works—nothing fancy, just straightforward engineering that does the job.
| Caliber | .45 ACP |
| Capacity | 12 rounds |
| Firearm Compatibility | Heckler & Koch USP Full Size |
| Body Material | Heat-treated blued steel |
| Follower Material | DuPont Zytel-based polymer |
| Spring Material | Heat-treated Chrome-silicon wire |
| Country of Origin | USA |
This Pro Mag magazine is designed for the full-size Heckler & Koch USP platform in .45 ACP. Make sure you're running the full-size model, as compact variants require different magazines.
The follower is cast from a proprietary DuPont Zytel polymer that resists deformation and wear through repeated loading cycles. The spring is heat-treated Chrome-silicon wire, which maintains consistent tension and resists the fatigue that can cause feeding issues over time.
Yes, the Pro Mag H&K USP magazine is manufactured in the USA.
This magazine holds 12 rounds of .45 ACP ammunition.
SKU: 126513678 • Width: 3in • Height: 2in • Depth: 10in • Weight: 0.31oz

