
Availability: In Stock
The ProMag SMIA20 is a 32-round 9mm Luger detachable magazine built for Smith & Wesson SD9 pistols. If you shoot an SD9 and want significantly more ammunition capacity than the factory standard, this magazine extends your operational window without requiring a reload—useful for range sessions, training drills, or anyone who values higher-capacity options for their defensive handgun.
This magazine is constructed from heat-treated steel with a black oxide finish, designed to withstand repeated loading, firing, and unloading cycles. The injection-molded follower and heat-treated chrome silicone wire spring are engineered to feed 9mm rounds reliably. As a detachable magazine, it's quick to swap in the field or at the bench.
ProMag manufactures this magazine in the USA, and the blued steel construction resists corrosion under normal storage and use. For shooters who want more rounds on tap without swapping mags between practice sessions or training, a 32-round 9mm magazine offers genuine utility—just confirm it fits your specific SD variant before purchase.
| Caliber | 9mm Luger |
| Capacity | 32 rounds |
| Fits | Smith & Wesson SD9 |
| Material | Heat-treated steel |
| Finish | Black oxide (blued) |
| Type | Detachable |
| Country of Origin | USA |
The ProMag SMIA20 is designed for the S&W SD9 pistol. Verify your specific SD variant before ordering to ensure compatibility, as magazine fit can vary across platform generations and configurations.
You receive the ProMag SMIA20 detachable magazine. No other accessories or components are included.
Yes, ProMag manufactures the SMIA20 in the USA.
The magazine features a black oxide finish on heat-treated steel, which provides corrosion resistance under normal storage and field conditions. Like all steel magazines, regular inspection and proper care will extend service life.

SKU: 115723496 • Width: 1.2in • Height: 1.2in • Depth: 8.6in • Weight: 0.3oz
Availability: In Stock
The ProMag SMIA20 is a 32-round 9mm Luger detachable magazine built for Smith & Wesson SD9 pistols. If you shoot an SD9 and want significantly more ammunition capacity than the factory standard, this magazine extends your operational window without requiring a reload—useful for range sessions, training drills, or anyone who values higher-capacity options for their defensive handgun.
This magazine is constructed from heat-treated steel with a black oxide finish, designed to withstand repeated loading, firing, and unloading cycles. The injection-molded follower and heat-treated chrome silicone wire spring are engineered to feed 9mm rounds reliably. As a detachable magazine, it's quick to swap in the field or at the bench.
ProMag manufactures this magazine in the USA, and the blued steel construction resists corrosion under normal storage and use. For shooters who want more rounds on tap without swapping mags between practice sessions or training, a 32-round 9mm magazine offers genuine utility—just confirm it fits your specific SD variant before purchase.
| Caliber | 9mm Luger |
| Capacity | 32 rounds |
| Fits | Smith & Wesson SD9 |
| Material | Heat-treated steel |
| Finish | Black oxide (blued) |
| Type | Detachable |
| Country of Origin | USA |
The ProMag SMIA20 is designed for the S&W SD9 pistol. Verify your specific SD variant before ordering to ensure compatibility, as magazine fit can vary across platform generations and configurations.
You receive the ProMag SMIA20 detachable magazine. No other accessories or components are included.
Yes, ProMag manufactures the SMIA20 in the USA.
The magazine features a black oxide finish on heat-treated steel, which provides corrosion resistance under normal storage and field conditions. Like all steel magazines, regular inspection and proper care will extend service life.
SKU: 115723496 • Width: 1.2in • Height: 1.2in • Depth: 8.6in • Weight: 0.3oz
