This is a factory-compatible 21-round extended magazine intended for Sig Sauer full-size P320 pistols, including the P320-M17 and M18. It is chambered for 9mm (9mm Luger) and provides higher capacity than standard magazines for extended sessions at the range or duties requiring rapid follow-up. Multiple listings indicate fitment with full-size P320 pistols and select P250/P320 variants; review fitment for your specific pistol model before use.
Key Specifications
- The magazine capacity is 21 rounds.
- The cartridge is listed as 9mm (9mm Luger).
- Compatibility is listed as Sig Sauer P320 (full-size), P320-M17/M18, and P250.
- The item type is an extended magazine.
- The finish/color is listed variously as Coyote / Flat Dark Earth / Black across sources.
- The material is listed variously as Steel and/or Polymer across sources.
- Quantity per package is 1 magazine.
- Package dimensions are listed as 1.90 x 4.20 x 9.60 inches.
- Package/shipping weight is listed as 0.35 lb.
This extended magazine gives you increased capacity with factory-compatible fit for Sig Sauer full-size P320 variants. Its extended profile is useful for extended range work and practical applications where additional rounds are desired. Check your pistol’s model and magazine compatibility to ensure correct fit before use.
