Key Takeaways
- →PN 365AXG-9-COMP-EQ: SIG put the Custom Works Equinox treatment on the metal-frame P365-AXG. This is a new Custom Works SKU, not a colorway on an existing P365.
- →Two-port Equinox slide: Nitron and Equinox polish, a two-port integrated expansion chamber, and a 3.1-inch carbon steel barrel.
- →AXG metal, 12+1: Black AXG alloy grip, custom black G10 panels, E-nickel controls, a flat trigger, and three 12-round steel magazines.
- →SIG-LOC optic-ready: The slide is cut for SIG-LOC and ships without a factory optic. X-RAY3 day/night sights stay on the gun.
- →Dealer MAP, no SIG MSRP: SIG has not published a list price. Cataloged dealer MAP is $1,199.99.
SIG P365-AXG Equinox
Metal-frame P365 carry with a factory two-port Equinox slide
Custom Works P365-AXG with Equinox-polished slide, two-port integrated expansion chamber, SIG-LOC optic-ready slide, and three 12-round steel magazines. PN 365AXG-9-COMP-EQ.
- +Factory Custom Works Equinox slide on a metal AXG grip
- +Two-port integrated expansion chamber without a threaded muzzle device
- +SIG-LOC optic-ready slide ships with a cover plate and X-RAY3 sights
- −SIG has not published an MSRP; dealer MAP sits well above polymer P365 comps
- −Flush capacity is 12+1, not the 17-round X-Macro grip
- −SIG-LOC is SIG's own optic interface; do not assume a Shield RMSc cut
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The P365-AXG Equinox Is A Custom Works Carry Gun
SIG Sauer put the Custom Works Equinox treatment on the metal-frame P365-AXG. The pistol is part number 365AXG-9-COMP-EQ: a Nitron and Equinox polished slide, a two-port integrated expansion chamber, a SIG-LOC optic-ready cut, E-nickel controls, a black AXG grip with G10 panels, X-RAY3 sights, and three 12-round steel magazines. It is a 9mm striker-fired carry gun, not a new color on a polymer P365.
SIG's job for this SKU is simple. The Equinox slide and two-port chamber are the Custom Works half. The AXG alloy grip is the metal-frame half. Together they make a denser, 22.1-ounce (with magazine) P365 that still uses a 3.1-inch barrel and a 12-round flush magazine. If you wanted Equinox cosmetics on a gun you can actually carry, this is the pistol SIG built for that.
SIG has not published an MSRP. Dealer MAP sits at $1,199.99. That is a Custom Works price, not a polymer X-Macro Comp price. Transfer it through an FFL like any other conventional pistol.

Two-Port Chamber On A 3.1-Inch Barrel
The slide is the reason this SKU exists. SIG machines a two-port integrated expansion chamber into the Equinox-polished slide, ahead of a 3.1-inch carbon steel barrel. Gas vents through those ports to cut muzzle rise. The barrel stays at the P365 compact length; the chamber lives in the slide, not on a threaded muzzle device.
That is the same idea SIG used on compensated P365 slides such as the P365-FUSE COMP, with a different envelope. The Equinox keeps the 3.1-inch barrel and the 12-round AXG grip. The FUSE COMP uses a longer compensated slide, a 17-round grip, and a factory ROMEO-X. The Equinox is Custom Works metal in a compact P365. The FUSE COMP is the longer polymer gun that ships with the optic on the slide.
SIG says the two-port chamber helps reduce muzzle rise for a flatter shooting experience. The company has not published a percentage, a load, or a split-time test for this SKU. Treat the ports as a factory recoil feature, then confirm it with the ammo you actually carry. The compensated slide will be louder than a closed-end P365 of the same barrel length. That is the trade for venting gas at the muzzle.

Black AXG, G10 Panels, E-Nickel Controls
Under the slide is a black AXG alloy grip with custom black G10 panels. AXG is SIG's metal P365 chassis: more mass in the hand than a polymer module, and a G10 surface instead of molded texture. At 22.1 oz with a magazine, the Equinox is heavier than a base P365. That extra weight is the point of buying metal. It is also the reason this gun will print more than a 17-ounce polymer micro-compact if you try to pocket it.
SIG finishes the flat trigger and the controls in E-nickel against the Nitron and Equinox slide. The trigger is striker-fired and flat. SIG has not published a pull weight for this SKU, so do not borrow a number from another P365. There is no manual safety lever on the pistol SIG photographed and listed. The dust cover carries a 1913 Picatinny rail for a compact light.
Capacity is 12+1 with three 12-round steel magazines in the box. That is the AXG compact grip, not the 17-round X-Macro module. If 17-round flush is the requirement, stay on the polymer X-Macro Comp and use our P365 X-Macro upgrades guide. If you already live on P365 parts, the P365 upgrades guide is the map for triggers, lights, and holsters that actually cross the family.


SIG P365 X-Macro Comp
17-round polymer P365 with a factory compensated slide
X-Macro variant with integrated compensated slide for reduced muzzle rise
- +Flattest-shooting P365 variant
- +Premium aesthetics and components
- +Competition-capable performance
- −Compensated slide is louder than the non-comp 3.7-inch X-Macro
- −Holster fit should be matched to compensated-slide models
- −Premium price point
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Factory Specs
SIG lists 365AXG-9-COMP-EQ as a 9mm with a 3.1-inch barrel, 12+1 capacity, 4.7 inches of height, and 22.1 oz with a magazine.
- Caliber
- 9mmLuger
- Barrel
- 3.1in
- Capacity
- 12+1Three 12-rd steel mags
- Weight
- 22.1ozWith magazine
SIG P365-AXG Equinox
| Part number | 365AXG-9-COMP-EQ |
| Caliber | 9mm Luger |
| Barrel | 3.1 in carbon steel |
| Height | 4.7 in |
| Weight | 22.1 oz with magazine |
| Capacity | 12+1 |
| Magazines | (3) 12-round steel |
| Sights | X-RAY3 day/night |
| Optic | SIG-LOC optic-ready, no factory optic |
| Slide finish | Nitron / Equinox |
| Grip | Black AXG alloy, G10 panels |
| Trigger | Flat, striker-fired |
| Rail | 1913 Picatinny |
Who Should Buy It
Buy the Equinox if you want Custom Works metal on a P365 you can conceal: Equinox slide, two-port chamber, AXG grip, G10, E-nickel, 12+1. We would take this SKU over a polymer X-Macro Comp when the metal frame and the Equinox slide are the reason you are spending Custom Works money.
Skip it if you need 17-round flush magazines, a factory optic in the box, or a Shield-pattern slide cut. Skip it if you wanted a threaded suppressor host; this SKU puts a two-port chamber in the slide rather than a threaded muzzle. For the broader carry field, our concealed carry pistol guide is the cross-shop. Spec a P365 in the builder if you want lights and holsters checked against the host before you buy.
Compact Lights for a 1913 Pistol Rail
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