Is the SIG 21rd extended magazine compatible with the P320c (compact) 9mm handgun? It is listed as a 15rd pistol but I would purchase the 21rd extended mag if it's compatible. Extending beyond the grip length is not an issue if that's the only problem. The SIG part number for the mag is - MAG-MOD-F-9-21

Question

Wade W. · Answer

These are designed to be totally modular, so the mag should fit.

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