SIG Sauer P365 XL X-Series RXZ RomeoZero 9 mm Optic-Ready Micro-Compact Pistol – 12+1 Capacity, 3.7 in Barrel
The P365 XL X-Series RXZ pairs SIG Sauer’s influential micro-compact design with a longer 3.7-inch barrel, an extended 12-round grip, and a factory-milled slide ready for RomeoZero-pattern optics. Dated January 14, 2021, this early-production example delivers the flat-faced X-Series trigger, tritium X-RAY3 day/night sights, and the modular fire-control unit that defined the modern optics-ready carry pistol.
Condition
Overall Condition: Good – Shows some signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Bore Rifling: Good – Intact, well-defined lands and grooves.
Specific Condition Notes: There are noticeable wear marks and scuffs on the slide and frame, and the factory optic-plate cover and rear sight were removed by the previous owner.
What’s Included
- SIG Sauer factory hard pistol case (black)
- Factory cable lock (sealed bag)
- SIG Sauer P365 series owner’s manual
- One 12-round SIG Sauer steel magazine
The XL variant stretches the original P365 concept with a 3.7-inch carbon-steel barrel and an extended beavertail grip module that carries 12+1 rounds without adding excessive bulk. A flat-faced X-Series trigger shortens reach and promotes a consistent break.
The matte-black slide features deep front and rear serrations for positive manipulation and is factory-milled for RomeoZero-footprint red-dot optics. Although the optic-plate cover and rear sight have been removed, the slide retains its integral mounting screws for direct optic installation.
SIG’s modular stainless-steel fire-control unit is the serialized component, allowing caliber or size conversion across the P365 family with simple grip-module swaps. This flexibility lets the owner tailor the pistol to different carry roles.
Factory X-RAY3 tritium sights provide a green-ring front and low-profile rear for 24-hour visibility. A single-slot proprietary SIG accessory rail accommodates compact lights or lasers while maintaining a slim profile for concealed carry.