User Ratings
No ratings yet
Be the first to review this product
The ProMag SMIA20 is a high-capacity replacement or spare pistol magazine designed to fit Smith & Wesson SD-series 9mm handguns. Built with a heat-treated steel magazine body and a blued/black-oxide style finish, it is engineered for durability while maintaining smooth feeding with an injection-molded follower. A chrome-silicone wire magazine spring helps deliver consistent performance. Made in the USA.
Product Highlights
- 32-round capacity magazine for 9mm Luger to extend time between reloads
- Compatible fit for Smith & Wesson SD-series (SD9) pistols
- Heat-treated steel magazine body with blued/black oxide-style finish for strength and wear resistance
- Injection-molded magazine follower for reliable feeding
- Chrome-silicone wire spring designed for long-lasting function
Specs
- Brand: ProMag
- Manufacturer Part Number: SMIA20
- UPC: 708279013393
- Caliber: 9mm Luger
- Capacity: 32 rounds
- Compatibility: Smith & Wesson SD-series (SD9)
- Body Material: Heat-treated steel
- Finish/Color: Blued / black oxide-style
- Follower: Injection-molded polymer
- Spring Material: Chrome-silicone wire
- Country of Manufacture: USA
- Package Quantity: 1
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$39.98
Lowest
$38.95
Highest
$39.98
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products

Magpul PMAG GEN M3 AR-15/M16/M4 Magazine 5.56 NATO 30 Round
Magpul
$11.99

Magpul PMAG 10/30 AR/M4 GEN M3 10-Round Magazine, Black 5.56x45 NATO/.223 Rem
Magpul
$13.87

Magpul PMAG GEN M2 5.56mm 30-Round FDE Magazine with Window
Magpul
$11.88

Magpul MAG556-ODG Windowed PMAG 30 Gen M3 5.56/.223 Polymer Magazine OD Green
Magpul
$17.05

Magpul PMAG GEN M3 5.56x45/.223 30rd Window Rifle Magazine - MultiCam Black
Magpul Industries
$13.34

DuraMag Speed AR-15 Magazine 30rd Black Orange Follower
Duramag
$18.49

Magpul PMAG 30 Gen M3 AR-15 Magazine 5.56x45 NATO / .223 Remington
Magpul
$14.95

Magpul PMAG AR/M4 Gen M2 MOE 5.56x45 NATO AR-15 Magazine
Magpul
$9.94
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AK Magazine Fit, Lockup, and Reliability Basics
A practical guide to AK magazine fit, front-to-back lockup, and how magazine variation affects feeding, bolt travel, and real-world reliability.
5 min read
Guide
The AK Platform: Core Design, Strengths, and Builder Tradeoffs
A practical AK overview covering operating system basics, parts ecosystem realities, and where the AK platform shines compared to AR-pattern rifles.
8 min read
Guide
AR-15 Caliber Options Beyond 5.56: What Changes and Why
A neutral overview of common AR-15 caliber paths beyond 5.56, including .300 Blackout, 6.5 Grendel, and .22 LR conversion approaches with practical system tradeoffs.
4 min read