Promag Smith & Wesson 5900 9mm Handgun Magazine Black Polymer 50/rd
$72.19
Expand your Smith & Wesson 5900’s capacity with this high-quality 50-round 9mm drum magazine from Promag. Durable polymer construction for reliable feeding.
18 in stock
ProMag magazines are designed utilizing both traditional stamping and welding of heat-treated high carbon steel and modern precision injection molding of mil-spec polymer compounds. Every ProMag magazine is backed by a lifetime guarantee against manufacturers defects. Made in USA.
- Drum housing constructed of a proprietary DuPont Zytel based polymer
- Magazine upper tower has full length steel internal insert stamped and welded like the factory magazine
- Injection molded magazine follower
- Magazine spring formed from heat treated stainless steel
- Made in USA
Frequently asked questions
What firearm and caliber is this magazine designed for?
It is a 9mm handgun magazine for the Smith & Wesson 5900.
What is the magazine capacity?
The magazine holds 50 rounds.
What materials are used in its construction?
The drum housing uses a DuPont Zytel-based polymer. The upper tower has a full-length stamped and welded steel internal insert, the follower is injection molded, and the spring is heat-treated stainless steel.
Does this magazine include a guarantee?
Yes. ProMag backs it with a lifetime guarantee against manufacturer defects.
| Weight | 1.740 lbs |
|---|---|
| Dimensions | 14.500 × 7.000 × 3.500 in |
| Manufacturer | ProMag Industries |
| Capacity | 50 |
| Finish | Black |
| Frame Material | Polymer |
| Caliber | 9mm |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.
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