The ProMag Industries Sig Sauer P320 Magazine Extension is a magazine extension for the Sig Sauer P320 chambered in 9mm. It adds 21 rounds of capacity.
- Manufacturer Part # : SIG-A20-FDE
- Type : Magazine Extension
- Caliber / Gauge : 9mm
- Capacity : 21
- Color : Blued Finish
- Fits : Sig Sauer P320
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