Sig Sauer builds this factory extended magazine (part no. MAG-365-9-12-COY) to work across the entire P365 family, holding 12 rounds of 9mm Luger in a coyote brown steel body that sits flush in the larger P365X or P365XL and extends slightly in the original P365 Micro Compact. It ships with an additional baseplate that can be swapped in to change that fit, giving one magazine genuine cross-compatibility across three pistols instead of needing a separate part for each. Manufactured to Sig’s own factory tolerances, it feeds and seats exactly as intended. For Sig Sauer P365, P365X, and P365XL owners, this handgun magazine is a versatile factory-correct spare.

Key Specifications

• Chambered in 9mm Luger, matching the P365 family’s factory caliber.
• Holds 12 rounds, an extended capacity across the platform.
• Fits the P365, P365X, and P365XL, flush in the X/XL and extended in the original P365.
• Ships with an additional baseplate to configure fit for the P365X or P365XL.
• Finished in coyote brown steel.

Frequently Asked Questions

Does this magazine work in all three P365 models? Yes, it’s designed to fit the P365, P365X, and P365XL, with an included baseplate to adjust fit.

Will it sit flush in every model? It’s flush-fit in the P365X and P365XL and extends slightly in the smaller original P365.

Buy the Sig Sauer P365/P365X/P365XL 12-Round Extended Magazine

A versatile factory magazine that fits three P365 models is a smart way to standardize spares. Order it from our Lubbock, Texas gun shop for fast, insured shipping.