The ProMag SMIA18 is a 15-round detachable magazine built for the S&W SD line in .40 S&W—a straightforward, reliable option for shooters who need extra capacity at the range, on the line, or in the field. If you run an S&W SD .40 (and your gun isn't the VE variant), this steel magazine gives you the firepower of 15 rounds in a compact, durable form factor. ProMag magazines are known for solid construction and dependable feeding, making them a practical choice for practice, duty, or backup carry.

Constructed from blued steel, the SMIA18 resists corrosion while maintaining a clean, professional appearance on your bench or in your kit. The detachable design means fast reloads and easy swaps when you're cycling through multiple mags during training or competition. Whether you're working on marksmanship at the local indoor range, prepping for 3-gun, or just stocking up on spares, this magazine is a no-nonsense addition to your .40 S&W arsenal.

Note: This magazine is engineered specifically for the S&W SD platform in .40 S&W and excludes the VE variant. Always verify your firearm's model before ordering to ensure proper fit and reliable function.

The ProMag SMIA18 is a 15-round detachable magazine built for the S&W SD line in .40 S&W—a straightforward, reliable option for shooters who need extra capacity at the range, on the line, or in the field. If you run an S&W SD .40 (and your gun isn't the VE variant), this steel magazine gives you the firepower of 15 rounds in a compact, durable form factor. ProMag magazines are known for solid construction and dependable feeding, making them a practical choice for practice, duty, or backup carry.

Constructed from blued steel, the SMIA18 resists corrosion while maintaining a clean, professional appearance on your bench or in your kit. The detachable design means fast reloads and easy swaps when you're cycling through multiple mags during training or competition. Whether you're working on marksmanship at the local indoor range, prepping for 3-gun, or just stocking up on spares, this magazine is a no-nonsense addition to your .40 S&W arsenal.

Note: This magazine is engineered specifically for the S&W SD platform in .40 S&W and excludes the VE variant. Always verify your firearm's model before ordering to ensure proper fit and reliable function.