The ProMag Ruger Security-9 drum magazine holds 50 rounds of 9mm ammunition, designed specifically for the Ruger Security-9 pistol.
- Caliber: 9mm Luger
- Capacity: 50 rounds
- Compatible Firearms: Ruger Security-9
- Material: Polymer body with steel internals
- Finish: Black
- Follower Type: Spring-loaded drum system
- Includes: Drum magazine, loading instructions
