ProMag SMI40 Magazine — 9mm 10-Round (Shield EZ)

The ProMag SMI40 is a 10-round replacement magazine designed for the Smith & Wesson Shield EZ 9mm pistol. It features a durable steel magazine body and components engineered for consistent feeding and serviceability. The follower and spring materials are specified for longevity, and the unit is listed as made in the USA.

Key Specifications

• Designed for the Smith & Wesson Shield EZ 9mm pistol.
• The capacity is 10 rounds.
• The caliber is 9mm.
• The magazine body is constructed from heat-treated steel.
• The magazine includes an injection molded magazine follower.
• The magazine spring is formed from heat-treated chrome silicone wire.
• Manufactured in the USA.
• Brand: ProMag.
• Compatibility note: Does not fit Smith & Wesson M&P 9mm, M&P Shield 9mm, M&P Shield Plus 9mm pistols.

Compact and straightforward, the SMI40 offers a factory‑specified 10‑round capacity and robust steel construction suited to range use and everyday carry preparedness. Its specified components—heat‑treated steel body, injection‑molded follower, and chrome silicone spring—are chosen to provide consistent feeding and service life for owners who prefer durable, no‑nonsense gear.