The Heckler & Koch Magazine, USP357, 10Rd. W/Ext. Fp. is a factory steel magazine built specifically for HK USP pistols chambered in .357 Sig. With its extended floorplate, this magazine offers a more secure grip and easier handling during reloads while maintaining a compact profile and reliable feeding performance.

This 10-round .357 Sig magazine is ideal for range sessions, training, and general duty or sport use where consistent function matters. The extended finger pad helps control the pistol during shooting and administrative handling, making it a practical upgrade over standard magazines. Backed by Heckler & Koch’s reputation for precision engineering and durable construction, it is a dependable choice for USP owners.

Key Features:

• Manufacturer: Heckler & Koch
• Model: USP357 10-Round Magazine With Extended Floorplate
• Caliber: .357 Sig
• Capacity: 10 Rounds
• Material: Steel
• Platform: HK USP
• Style: Extended Floorplate