Description
This is the factory SIG Sauer 17-round, 9mm steel magazine for the P365-AXG LEGION. SIG’s part number is 8900844. It has a Henning Group aluminum base pad, rear witness holes so you can see at a glance how many rounds are loaded, and an orange follower that makes an empty magazine easy to spot.
SIG lists it as compatible with the P365-AXG LEGION, the P365-XMACRO and the P365-FUSE. SIG’s own page also lists the P365-DH3 and P365 FLUX. It is a double-stack steel magazine with a black oxide finish.
SIG Sauer says its magazines are sourced from several manufacturers and made to its exact specifications, so there can be slight differences in stamping and finish color from one magazine to the next. Pictures may differ a little from the magazine you receive.
A spare 17-round magazine is a practical add-on for a P365-XMACRO or P365-AXG LEGION. You may also want a magwell or base pad: Radian makes both for the XMACRO.
Key specs
- Capacity: 17 rounds
- Caliber: 9mm Luger
- Material: steel, black oxide finish
- Base pad: Henning Group aluminum
- Rear witness holes, orange follower
- Fits: P365-AXG LEGION, P365-XMACRO, P365-FUSE (SIG also lists P365-DH3 and P365 FLUX)
- SIG part number: 8900844
See also: P365 parts category | SIG P365 21-round magazine | Radian TRU-17 base pad, P365 XMACRO | Radian P365 backstrap + magwell, XMACRO | SIG P365 XMACRO 9mm pistol
More from SIG Sauer.
WARNING: Cancer & Reproductive Harm – www.P65Warnings.ca.gov


