SIG SAUER P320 XCompact RXP 9mm Luger, 3.6 in Barrel, ROMEO1 PRO, 15+1, Nitron Slide, XSeries Grip
This P320 XCompact RXP pairs SIG SAUER's compact 3.6-inch slide and XSeries ergonomics with a factory-installed ROMEO1 PRO red dot and tall iron sights. It offers a flat-faced trigger, front and rear slide serrations, and an M1913 accessory rail in a lightweight polymer frame. This example is in excellent condition and includes two 15-round magazines, the factory case, and paperwork.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There is very mild holster wear; otherwise, the pistol is in great shape.
What's Included
- SIG SAUER factory polymer carry case with molded SIG logo
- Factory paperwork
- SIG SAUER ROMEO1 PRO red dot sight (installed)
- 2x 15-round magazines
The XCompact RXP configuration delivers a compact 9mm slide and barrel length of 3.6 inches with the ROMEO1 PRO mounted from the factory and matched to tall iron sights for a clear, usable sight picture. The front sight is a tall blade with a green dot.
The Nitron-finished slide features aggressive front and rear serrations, while the XSeries compact grip module provides an extended beavertail, a deep undercut, and a flat trigger for a consistent trigger reach. The dust cover integrates a true M1913 accessory rail.
This striker-fired P320 uses a serialized Fire Control Unit (FCU) visible through the frame window; the FCU serial matches the supplied serial. Markings include a slide roll-marked "SIG SAUER P320," a barrel stamped "9mm x 19," and a frame marked "NEWINGTON, NH, USA."
Capacity is 15+1 using P320 Compact-pattern double-stack 9mm magazines. The included steel magazines are stamped "MADE IN ITALY" and have witness holes.
The P320 platform employs a 3-point takedown that does not require a trigger pull. The design lineage was selected by the U.S. Army in 2017 as the basis for the M17/M18 series.




