The ProMag HECA2 is a 20-round replacement or spare magazine designed for full-size Heckler & Koch USP pistols chambered in .45 ACP. Its body is constructed from heat-treated blued steel with a polymer follower and heat-treated chrome-silicon spring for consistent feeding. The magazine ships with a molded grip sleeve to fill the gap between the grip frame and the base plate and is manufactured in the United States.
Key Specifications
- The magazine capacity is 20 rounds.
- The caliber is .45 ACP.
- Designed to fit H&K USP (Full Size) pistols.
- The magazine body is constructed of heat-treated blued steel.
- The follower is made from a DuPont Zytel-based polymer.
- The spring is formed from heat-treated chrome-silicon wire.
- The finish is oxide (blued).
- Includes a molded grip sleeve to fill the gap between the grip frame and the base plate.
- Manufactured in the United States.
- Backed by a lifetime guarantee against manufacturer’s defects.
This ProMag HECA2 provides a straightforward, American-made spare magazine option that mirrors USP full-size fit and uses durable materials and reliable components for everyday use and range service.





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