ProMag SMI27 Standard 9mm Luger 8rd Blued Steel Magazine for S&W M&P Shield

The ProMag SMI27 is a factory-style replacement magazine built for the Smith & Wesson M&P Shield chambered in 9mm Luger. As an affordable spare or replacement, the Standard pattern magazine delivers an 8-round capacity in a heat-treated steel body designed for reliable feeding in your compact carry pistol.

The body is precision-formed from heat-treated steel and finished in a corrosion-resistant blued (black oxide) coating for long service life. Internally, ProMag specs a heat-treated chrome silicon wire spring for consistent feed tension and an injection-molded polymer follower for smooth cycling round after round. Witness holes along the body give a quick visual count of remaining rounds at a glance.

Designed as a centerfire pistol accessory with drop-in compatibility for the S&W M&P Shield 9mm platform, the SMI27 is a straightforward way to add a spare to your range bag or rotate magazines during high-round-count training. Whether you are topping off an everyday carry setup or stocking the range kit, this ProMag magazine brings proven steel construction and dependable fit together.