SIG SAUER P365 / P365X / P365-XL 9mm 15-Round Magazine

A factory SIG SAUER 15-round magazine for the P365, P365X, and P365-XL. Steel body, black oxide finish, double stack, with side witness holes — including a capacity witness hole that stays visible with the magazine seated in a standard P365. SIG part number MAG-365-9-15.

Two Baseplates in the Package

This is the detail that makes the magazine worth buying: it ships with two baseplates. The installed one leaves no gap when inserted into a standard P365. A second baseplate is included that installs to accommodate the P365X and P365-XL. One magazine, correctly fitted to whichever of the three you're carrying.

It Adds About an Inch

Overall magazine length runs roughly one inch longer than the flush-fit 10-round magazine, so on a standard P365 it extends below the grip — which most shooters consider a feature, since it gives the pinky somewhere to go and turns a two-finger grip into a full one.

Fitment — Check Before Ordering

SIG's statement is explicit: compatible with all models of the P365, P365X, and P365-XL. This magazine is NOT compatible with P365-XMACRO, P365-AXG, or P365-FUSE models — those are a different frame family and take different magazines. If you have an XMACRO, AXG, or FUSE, contact us and we'll get you the right one.

Specifications

Frequently Asked Questions

Will it fit my XMACRO?
No. SIG states this magazine is not compatible with P365-XMACRO, AXG, or FUSE models. Contact us for the correct magazine.

Does it stick out of a standard P365?
Yes — roughly an inch longer than the flush 10-round magazine. The installed baseplate is designed so there's no gap where it meets the grip.

Why two baseplates?
One fits a standard P365 with no gap; the other accommodates the taller P365X and P365-XL grips.

Is it a factory SIG magazine?
Yes. SIG notes their magazines are sourced from multiple manufacturers, so there may be slight differences in stamping and finish color between examples.

Magazine sales are subject to state and local law.