SIG Sauer P365 9mm 12-Round OEM Steel Magazine – MAG-365-9-12

SIG P365 12 Round Magazine

SIG P365 12 Round Magazine is a factory-style 9mm magazine designed to provide added capacity for compatible SIG Sauer P365-series pistols. With room for 12 rounds, it is a practical spare or replacement magazine for range practice, training, and lawful everyday carry where permitted.

The SIG P365 12 round magazine for sale uses a durable steel body and is designed to support consistent feeding in compatible P365 9mm firearms. Its extended capacity gives shooters two additional rounds compared with a standard 10-round P365 magazine, while also providing more grip surface on the original P365 frame.

Built for dependable use

This SIG P365 9mm magazine is made for smooth, reliable operation with compatible 9mm Luger ammunition. The steel construction offers everyday durability, while the polymer baseplate supports secure handling during magazine changes.

The 12-round design is useful for shooters who want additional capacity for range sessions or a spare magazine for their carry setup. As with any magazine, reliable performance depends on correct fit, proper loading, clean components, and compatible ammunition.

Compatibility and legal notice

The SIG P365 extended magazine is intended for compatible 9mm SIG Sauer P365, P365X, and P365-XL pistols. It sits flush in P365X and P365-XL grip modules, while it extends below the grip of a standard P365 and uses the included P365 baseplate for proper fit.

Always verify compatibility with your specific firearm model before purchase. Magazine-capacity laws vary by jurisdiction, so confirm all applicable state and local restrictions before ordering or using this 12-round magazine.