Sig Sauer P365 X-Macro Comp ROMEO-X SIG-LOC 9mm 3.1″ 17rd (2 Mags)
Pros & cons
What works
- 21.5 oz unloaded weight — balances capacity with carry comfort
- 30% reduced muzzle flip vs standard P365 — faster follow-up shots
- Includes $399 ROMEO-X optic — saves gunsmithing costs
- 17+1 capacity — micro-compact size with full-size firepower
Trade-offs
- Proprietary optic mount — limits aftermarket optic choices without adapters
- $1,179.99 MSRP — $400 premium over non-optic X-Macro models
- Increased muzzle blast — compensator creates more noise and flash
- Limited holster compatibility — requires specific X-Macro Comp holsters
Video review
Expert review
Specs at a glance
About this product
The Sig Sauer P365 X-Macro Comp ROMEO-X SIG-LOC 9mm is a compensated, optics-ready micro-compact pistol that delivers expanded 17+1 capacity with reduced muzzle flip for faster follow-up shots. This configuration includes the factory-installed ROMEO-X Compact red dot sight using SIG's proprietary mounting system, making it ready for immediate use without additional gunsmithing. It represents the evolution of Sig's P365 platform into a duty-ready carry option with enhanced control features.
What is the Sig Sauer P365 X-Macro Comp ROMEO-X used for?
This pistol is designed for everyday concealed carry with enhanced defensive capabilities and range performance. The integral compensator reduces muzzle flip by approximately 30% compared to non-compensated P365 models, enabling faster target reacquisition. The 17-round capacity provides substantial firepower in a package measuring just 6.6 inches long and 1.1 inches wide, making it suitable for both duty carry and defensive training scenarios.
How does the P365 X-Macro Comp compare to the Springfield Hellcat Pro?
The X-Macro Comp offers superior muzzle control and optics integration compared to the Springfield Hellcat Pro. While both pistols offer 17-round capacity in similar dimensions, the Sig's integrated compensator and direct-mount ROMEO-X optic provide faster sight recovery and a cleaner mounting solution. The Hellcat Pro retains the advantage in aftermarket holster compatibility due to its longer market presence, but the X-Macro Comp delivers better out-of-the-box performance for shooters wanting immediate optics readiness.
What does it weigh and what are the dimensions?
The complete pistol weighs 21.5 ounces unloaded and measures 6.6 inches in length, 5.2 inches in height, and 1.1 inches in width. The 3.1-inch barrel maintains the P365's concealability while the X-Macro grip module adds approximately 0.3 inches in height over the standard P365 to accommodate the 17-round magazines. This creates a balanced package that carries comfortably while providing full-size pistol capacity.
Who is this NOT for?
This pistol is not ideal for beginners or shooters on a tight budget due to its $1,179.99 price point and specialized features. The compensator creates more pronounced muzzle blast and may not be suitable for shooters who prioritize discreet carry over performance. Those preferring traditional iron sights or who already own rifles like the Stevens 334 for hunting may find this level of tactical refinement unnecessary for their needs.
What's in the box?
The package includes the complete pistol with installed ROMEO-X Compact optic, two 17-round steel magazines with high-visibility followers, three interchangeable grip backstraps (small, medium, large), and all necessary documentation. Unlike many optics-ready pistols that ship without an optic, this configuration saves approximately $300-400 compared to purchasing the optic separately and having it mounted by a gunsmith.
Is the P365 X-Macro Comp worth it at $1,179.99?
At $1,179.99, this pistol delivers exceptional value for shooters wanting a complete, optics-ready compensated carry system without additional modifications. The included ROMEO-X optic alone retails for $399, making the effective pistol cost approximately $780 when purchased as a package. For comparison, building a similar setup from a base P365 would require approximately $200 in gunsmithing plus optic costs, making this factory configuration both cost-effective and warrantied as a complete system.
Key attributes
| upc | 798681720316 |
| manufacturer | SIG SAUER |
| manufacturer part number | 365XCA-9-COMP-RXSL |
| action | Semi-Auto |
| barrel finish | Black |
| barrel length | 3.1'' |
| caliber/gauge | 9mm |
| capacity | 17+1 |
| color | Black |
| length | 6.6'' |
| magazine included | 2 x 17-Round |
| model | P365 |
| number of magazines | 2 |
| product type | Striker Fired |
| shipping weight | 0.0 |
| sights | Std. X-RAY 3 Day/Night Sights |
| sights type | Night Sights |
| slide description | Serrated w/Optic |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is it compatible with Holosun 507K optics?
- No, the SIG-LOC mounting system is proprietary to Sig Sauer optics only. The ROMEO-X Compact uses a unique footprint that differs from the Holosun 507K's mounting pattern. You would need an adapter plate, which adds height and complexity to the sight picture.
- Does it fit standard P365 holsters?
- No, the X-Macro frame is approximately 0.3 inches longer than standard P365 models and requires specific holsters. The compensator slide may also interfere with some P365 holster designs. We recommend checking with holster manufacturers like Tier 1 Concealed or Black Arch for X-Macro specific options.
- How long does shipping take to FFL dealers?
- Standard shipping to your selected FFL dealer takes 3-5 business days after order processing. All firearms require shipment to a licensed FFL holder, and you must coordinate with them for transfer paperwork. Processing time is typically 24-48 hours before shipment.
- Can I return it if it doesn't fit my hand?
- Firearms sales are final due to federal regulations, but the interchangeable backstraps provide three size options to improve fit. If the grip still doesn't work for you, aftermarket modules from companies like Wilson Combat or Icarus Precision offer additional sizing options starting at $65.