Description
The Sig Sauer P365 XMacro Compact Optic carries seventeen rounds in a frame sized to conceal, with the red dot already mounted on the factory optic cut. MAG5 Firearms stocks it with a 3.7-inch barrel, a beavertail frame, a Picatinny rail and interchangeable backstraps.
Seventeen Rounds in a Carry Frame
The XMacro grip module is the engineering story here. SIG reworked the magazine and grip geometry to fit seventeen rounds into a frame that still measures about an inch wide, which is duty-pistol capacity in a concealment footprint.
That removes the most common compromise in concealed carry. The Sig Sauer P365 XMacro Compact Optic does not ask the owner to carry a larger gun or accept a grip that prints.
The Included ROMEO-X Compact
The ROMEO-X Compact is a closed-emitter design, which keeps lint and debris off the window during carry. That is a real advantage over open-emitter dots in a pocket or an inside-the-waistband holster.
Because it ships mounted on the Sig Sauer P365 XMacro Compact Optic, there is no footprint research, no plate to order and no discovering later that the irons no longer line up.
Sig Sauer P365 XMacro Compact Optic Specifications
| Manufacturer | SIG SAUER |
|---|---|
| Model | P365 XMacro with Optic |
| Part Number | 365XCA9BXR3PRS |
| Caliber | 9mm Luger |
| Capacity | 17+1 Rounds |
| Barrel Length | 3.7 inches |
| Slide | Black Nitron Stainless, Optic Cut, Serrated |
| Frame | Black Stainless with Beavertail and Picatinny Rail |
| Grip | Interchangeable Backstrap |
| Optic Included | SIG ROMEO-X Compact |
| Action | Striker Fired |
| UPC | 798681732517 |

Backstraps and Grip Fit
Interchangeable backstraps let the grip circumference be fitted to the hand, which matters more on a pistol carrying this much capacity than most people expect.
A beavertail lets the hand ride high over the bore, and on a gun this light that high grip is most of what keeps the muzzle flat.
Sig Sauer P365 XMacro Compact Optic Rail and Holsters
A Picatinny rail on the dust cover takes a compact weapon light, which turns the pistol into a credible home defense gun when it is not on the belt.
Holsters cut for the XMacro are widely available, including rigs made specifically for a mounted optic and a light.
Magazines and Availability
Seventeen-round magazines are standard and widely produced, so spares are inexpensive and consistently in stock.
MAG5 Firearms is a licensed FFL dealer in Pennsylvania. This pistol ships new in the factory case with magazines, the optic installed and documentation, transferred through your local FFL.
Other Sig Sauer P365 XMacro Compact Optic configurations and high-capacity carry pistols are listed in our handgun catalog. Factory specifications are published by SIG SAUER.
Every Sig Sauer P365 XMacro Compact Optic sold by MAG5 Firearms ships new in the factory packaging with the accessories SIG SAUER includes, and transfers to your chosen FFL. The Sig Sauer P365 XMacro Compact Optic is a regulated firearm and we verify licensing before any order leaves the shop.




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