ProMag 5.7x28mm 55-Round Drum Magazine

The ProMag 55-round drum magazine is designed for 5.7 x 28 mm cartridges and provides high-capacity feeding for compatible systems. It combines a DuPont Zytel-based polymer body with a blue steel upper magazine tower for structural support. The magazine includes an injection-molded follower, a heat-treated stainless steel spring, and is manufactured in the USA with a lifetime guarantee against manufacturer's defects.

Key Specifications

• The capacity is 55 rounds.
• The caliber is 5.7 x 28 mm.
• The magazine is configured as a 55-round drum.
• The magazine body is constructed of a proprietary DuPont Zytel based polymer.
• The upper magazine tower is made of blue steel.
• The follower is injection molded.
• The magazine spring is heat treated stainless steel.
• The finish/color is Black.
• The manufacturer is ProMag.
• The product is Made in USA.

Durably constructed components and a high-capacity drum configuration make this ProMag magazine a practical option for users who require extended feeding for 5.7 x 28 mm applications. Its polymer body with a reinforced steel tower and robust internal components are intended to provide consistent function and long-term service life.