Sig Sauer Logo
SIG SAUER P320 Safety Information
July 29, 2025
Click here to read more

Sig Sauer P320 RXP Compact 9mm Striker-Fired Pistol with ROMEO1 Pro Red Dot Optic

  • Item Number: 320C-9-B-RXP
  • /
  • View More Items by Sig Sauer
  • /
  • Condition: NEW
Sig Sauer P320 RXP Compact 9mm Striker-Fired Pistol with ROMEO1 Pro Red Dot Optic
$879.99 $979.99

No Longer Available
This product is no longer available. We don't know when or if it will be back in stock.
  • SPRINGFIELD ECHELON 9MM PISTOL 4.5 IN BARREL OPTIC READY CRIMSON TRACE LIGHT 5 MAGS

    Springfield Echelon 9mm Pistol with Manual Safety, Viridian Green Dot, Crimson Trace Light,
    $559.99

  • BERETTA APX-A1 COMP TACTICAL 9MM 4.2 IN THREADED BBL 15 RD MAG

    Beretta APX-A1 Compact Tactical 9mm Optic Ready Pistol with Threaded Barrel
    $549.00 $374.99

  • RUGER RXM 9MM 15RND BLACK

    Ruger RXM 9mm Optic Ready 15+1 Semi-Auto Pistol with Magpul EHG
    $359.99

  • SMITH AND WESSON MP9 M2.0 COMPACT 9MM 4.07 IN BARREL BLACK OPTIC READY TS SAVIOR GREY BAG 5 MAG

    Smith & Wesson MP9 M2.0 Compact 9mm Optic Ready Pistol with Five Magazines and Savior Pistol Ca
    $669.00 $519.99

  • RUGER MAX-9 9MM 3.2 MS FSIGHT BLK (1) 12-RD

    Ruger MAX-9 9mm Optic Ready Semi-Auto Pistol with 3.2 Inch Barrel
    $299.00 $229.99

  • TAURUS G3C T.O.R.O 9MM COMPACT OPTIC READY 2X12 MAGS

    Taurus G3c T.O.R.O 9mm Optic Ready Pistol
    $229.98

  • KIMBER MICRO 9 CINDER 9 MM

    Kimber Micro 9 Cinder 9mm Semi-Auto Pistol
    $389.99

  • SHADOW SYSTEMS MR 920 9MM THREADED BRONZE BARREL

    Shadow Systems MR920 Combat 9mm Optic Ready Black Pistol with 4.5 Inch Bronze Spiral Fluted Threaded Barrel
    $799.00 $569.99

  • BERETTA 92XI 9MM TACITICAL TWO-TONE TB 2-18RD

    Beretta 92XI SAO Tactical 9mm Optic Ready Two Tone Pistol with Threaded Barrel and Suppressor Height Night Sights
    $1,069.00 $694.99

  • BERETTA M9 92 SERIES 9MM PISTOL

    Beretta M9 92 Series 9mm Centerfire Pistol with 3-Dot Sights
    $799.00 $599.98

  • RUGER EC9S 9MM GRAY FRAME BLACK SLIDE 3.12 IN BBL

    Ruger EC9s 9mm Carry Conceal Pistol with Gray Frame
    $369.00 $219.99

  • SPRINGFIELD KUNA 9 MM 6.125 IN BARREL WITH FSA

    Springfield Kuna 9mm Roller-Delayed PDW with Strike Industries FSA Brace
    $1,149.99

  • CCI 9mm 124 gr FMJ Blazer Brass 50/Box

    CCI 9mm 124 gr FMJ Blazer Brass 50/Box
    $25.99 $10.99
    ($0.22 / round)

  • Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box

    Maxx Tech 9mm Luger 115 gr FMJ Brass Case Target Ammo 50/Box
    $16.95 $9.99
    ($0.20 / round)

  • CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box

    CCI 9mm 115 gr FMJ-RN Blazer Brass 50/Box
    $24.99 $10.98
    ($0.22 / round)

  • Federal 9mm Luger 124 gr Total Synthetic Jacket Syntech 50/Box

    Federal 9mm Luger 124 gr Total Synthetic Jacket Syntech 50/Box
    $28.99 $12.99
    ($0.26 / round)

  • Federal 9mm Luger 115 gr  FMJ Black Pack 250/Box

    Federal 9mm Luger 115 gr FMJ Black Pack 250/Box
    $53.49
    ($0.21 / round)

  • Winchester 9mm Luger 115 gr FMJ USA Target/Practice 50/Box

    Winchester 9mm Luger 115 gr FMJ USA Target/Practice 50/Box
    $11.17
    ($0.22 / round)

  • Browning 9mm 147 gr X-Point Defense 20/Box

    Browning 9mm 147 gr X-Point Defense 20/Box
    $12.93
    ($0.65 / round)

  • Winchester 9mm Luger 147 gr FMJ-Encapsulated Super Suppressed Subsonic 50/Box

    Winchester 9mm Luger 147 gr FMJ-Encapsulated Super Suppressed Subsonic 50/Box
    $16.46
    ($0.33 / round)

  • CCI 9mm Luger 147 gr FMJ Blazer Brass 50/Box

    CCI 9mm Luger 147 gr FMJ Blazer Brass 50/Box
    $16.99 $12.99
    ($0.26 / round)

  • Federal 9mm Luger 124 gr HST JHP Personal Defense 20/Box

    Federal 9mm Luger 124 gr HST JHP Personal Defense 20/Box
    $37.99 $21.99
    ($1.10 / round)

  • Hornady 9mm 115 gr Critical Defense 25/Box

    Hornady 9mm 115 gr Critical Defense 25/Box
    $22.49
    ($0.90 / round)

  • Federal 9mm Luger 115 gr FMJ American Eagle  50/Box

    Federal 9mm Luger 115 gr FMJ American Eagle 50/Box
    $24.99 $11.99
    ($0.24 / round)

  • SIG SAUER P320 9MM 30RND EXTENDED COY MAGAZINE

    Sig Sauer P320 9mm 30-Round Extended Factory Magazine - Coyote Brown
    $59.99 $42.99

  • SIG SAUER P320 M17 9MM 17 RD MAG (COYOTE)

    Sig Sauer P320 Full-Size/M17 9mm 17 Round Coyote Magazine
    $49.00 $35.99

  • SIG SAUER P250/P320 9MM 17 RD MAG

    Sig Sauer P320 9mm 17 Round Factory Magazine
    $46.00 $36.99

  • SIG SAUER P320/P250 COMPACT 9MM 15 RD MAG

    Sig Sauer P320/P250 Compact 9mm 15 Round Factory Magazine
    $46.00 $35.99

  • ETS GROUP SIG SAUER P320 9MM 15 RD MAG

    Elite Tactical Systems Sig Sauer P320 9mm 15-round Magazine
    $21.99

  • SIG SAUER SIG SAUER P320 9MM 30 ROUND MAG

    Sig Sauer P320 9mm 30 Round Extended Factory Magazine
    $59.99 $43.49

  • SIG SAUER P320 COMPACT 9MM 10 RD MAG

    Sig Sauer P320 Compact 9mm 10-Round Factory Magazine
    $49.00 $35.99

  • MAGPUL AMAG 17 SG9 9MM 17RND MAG FOR SIG SAUER P320

    Magpul AMAG 17 SG9 9mm 17 Round Magazine for Sig Sauer P320/M17
    $34.95 $27.99

  • ETS GROUP CARBON SMOKE FITS SIG SAUER 320 17RD 9MM MAG EXTENDED

    Elite Tactical Systems Sig P320 9mm 17 Round Carbon Smoke Magazine
    $14.49 $9.99

  • SIG SAUER P320 FULL-SIZE 9MM 10-ROUND FACTORY MAGAZINE WITH COYOTE BASEPLATE

    Sig Sauer P320 Full-Size 9mm 10 Round Factory Magazine with Coyote Baseplate
    $49.99

  • ETS GROUP CARBON SMOKE FITS SIG SAUER 320 30RD 9MM MAG EXTENDED

    Elite Tactical Systems Sig P320 9mm 30 Round Carbon Smoke Magazine
    $14.99 $10.49

  • ETS GROUP OMEGA FITS SIG SAUER 320 17RND 9MM MAG

    Elite Tactical Systems Omega 17 Round 9mm Magazine for Sig Sauer P320 Pistols
    $25.99 $19.99

Product Description

What's in the Box

  • Sig Sauer P320 Compact 9mm Striker-Fired Pistol
  • Sig Sauer ROMEO1 Pro Red Dot
  • (2) 15-Round Magazines
  • Cable Lock
  • Owner's Manual

Featuring SIG SAUER's exclusive slide-mounted optic, the ROMEO1 PRO. The RXP will ensure faster sight acquisition on target. Simply put, it will make a good shooter a great shooter. Shoot confidently with faster target acquisition and improved accuracy. Installed. Zeroed. And backed by the quality of the SIG name.

The P320 RXP Compact offers a smooth, crisp trigger to make any shooter more accurate, an intuitive, 3-point takedown and unmatched modularity to fit any shooter and any situation. Its compact frame is ideal for target shooting and home defense, as well as many concealed carry scenarios. This modular, striker-fired pistol features a full-size grip, compact slide, and contrast Suppressor Height Sights along with a factory mounted 6MOA ROMEO1 PRO. Available in 9mm. Safety features include a striker safety, disconnect safety.

Firearm Features

  • ROMEO1 PRO Reflex Optic Installed with Suppressor Contrast Sights
  • Serialized Striker-Fired Trigger Group with a Smooth, Consistent Trigger Pull
  • Modular Polymer Grips Available in Small, Medium, and Large
  • 3-Point Takedown System Eliminates the Need to Pull the Trigger To Disassemble
  • Ambidextrous Slide Catch Lever and Reversible Magazine Catch
  • (2) 15rd Steel Magazines

Firearm Specifications

  • Item Number: 320C-9-B-RXP
  • Caliber: 9mm
  • Action Type: Striker Fired DAO
  • Trigger Pull DA: 5.5 - 7.5 lbs
  • Trigger Pull SA: NA
  • Overall Length: 7.2 in / 183 mm
  • Overall Height: 5.3 in / 135 mm
  • Overall Width: 1.4 in / 35.5 mm
  • Barrel Length: 3.9 in / 99 mm
  • Sight Radius: 5.8 in / 147 mm
  • Weight w/Mag: 26.0 oz / 737 g
  • Mag Capacity: 15 Rounds Comes with 2
  • Sights: ROMEO1 Pro with Suppressor Contrast 3-Dot Sights
  • Grips: Interchangeable Polymer
  • Frame Finish: Black Polymer
  • Slide Finish: Nitron®
  • Accessory Rail: Yes

Customer Comments & Questions

Customer Reviews

(4 out of 5) First red dot optic
by Delbert H Gideon from Clovis, NM on August 5, 2020

The handgun action is Sig Sauer Perfect...but the Romeo One Pro optic needed considerable adjustment to both the Windage and Elevation. I was expecting it to be zeroed in and cowitnessed right out of the box. It was not. If you are new to red dot sights, as I am, you may be disappointed the first time at the range. I will do a follow-up review in a few weeks.

(3 out of 5) Still Shootin
by Delbert from Clovis, NM on June 25, 2021

I have had to return my slide to Sig Sauer Warranty Department twice since buying the handgun in 2020. In both instances, the front sight had drifted off center. True this is a red dot configuration and the iron sights are not used often but they need to stay aligned. The handgun works smooth in every operational aspect but I was extremely surprised and disappointed that the iron front sight would not stay in place. That is my reasoning for the 3 5 3 rating.

(4 out of 5) Almost five stars
by Delbert G. from Clovis, NM on December 14, 2022

I love this handgun and would have given it 5 stars but I had to send it back to Sig Sauer because the iron sights kept coming loose and drifting. Not a big deal with the optic as the primary site but annoying and inconvenient none the less. I upgraded the trigger system and replaced the Romeo red dot with Holosun ACSS Vulcan optic. Now the firearm is one of my favorite platforms.