New for 2021: SIG Sauer P365X ROMEOZero

by
posted on March 28, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
sigsauer-p365romeozero.jpg

SIG Sauer Inc. introduced a new addition to P365 line of micro-compact, striker-fired handguns for 2021 with the P365X ROMEOZero. The P365 line of handguns has grown in popularity since the initial P365 release in 2019, with SIG Sauer introducing several variations to the line in terms of barrel length, magazine capacity and other additional features along the way. The new P365X ROMEOZero continues this trend by building off the strengths of the original P365 and later P365XL of the XSERIES.

The P365X ROMEOZero, like the other pistols of its line, is a polymer-frame, striker-fired semi-automatic 9 mm pistol geared specifically for concealed carry use. It has several of the attributes found on the P365XL, including the larger grip module and XSERIES trigger group. The enlarged integrated carry grip module borrowed from the P365XL design allows the P365X ROMEOZero to accept the same 12-round magazines as used in the P365XL, along with 15-round extended magazines that are sold separately. The larger grip module results in an overall height of 5.5”, which provides more area for the user’s hand to grasp.

Also found on the polymer frame is an extended beavertail to prevent the slide from biting the user's hand, along with the same rough-texture pattern on the front, back and sides of the grip as found on the rest of the P365 line. The P365X ROMEOZero has a XSERIES flat-shoe trigger with a 90-degree brake that reduces the perceived trigger pull weight. Despite having the grip module size of the P365XL, the P365X ROMEOZero uses the shorter 3.1" barrel found on the original P365.

The shorter barrel reduces the overall length to 6" versus the longer P365XL, which increases comfort when used for concealed carry. The slide features XSERIES markings along with serrations located on the sides of the slide at the front and rear. Also included on the slide is a X-RAY3 front sight post. As the name suggests, the P365X ROMEOZero’s slide is cut for and comes with a SIG Sauer ROMEOZero 1X24 mm micro red-dot optic pre-installed from the factory.

The ROMEOZero red-dot optic uses an LED emitter powered by a single CR1632 battery, with eight manually adjusted brightness settings. It's turned on by a MOTAC motion activation system, negating the use of a manual power button before use. The body of the ROMEOZero is constructed of polymer with texturing on the sides for added grip of the slide during manipulation. At the rear of the optic is a built-in rear sight notch for use with the front sight post if needed.

The P365X ROMEOZero is 1.1” wide and weighs 18 oz. without the magazine. The addition of the 0.93” ROMEOZero optic increases the height of the P365X package to 6.43” in total and only adds 0.4 oz. to the overall weight. For more information on the P365X ROMEOZero visit sigsauer.com.          

Latest

Robinson Armament Xcrl Gotw 1
Robinson Armament Xcrl Gotw 1

Gun of the Week: Robinson Armament XCR-L

One man, Alex Robinson, took it upon himself to address what he saw as several shortcomings in the AR-15 design. He consulted with special forces operators and asked what they wanted in a rifle platform. The result was the Robinson Armament XCR.

Maryland Bans Glocks and the NRA Responds

Legislation recently signed into law by Maryland Gov. Wes Moore essentially bans nearly every Glock and Glock-style pistol on the market from being sold within the state.

The Armed Citizen® May 29, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Federal Signs Agreement With U.S. Army to Improve Ammo Performance

Federal Ammunition announced this week that it has entered into an agreement that allows the U.S. Army to utilize its patented Peak Alloy ammunition case technology for use in multiple cartridges and weapon systems.

Four Armed Citizen Stories That Tell us a Lot

Each self-defense case is different. As we read them, we find ourselves wondering what we would have done, and then asking if the citizen made the best decisions possible in the worst-case scenario.

The Three Rs of Performance Shooting: Rise, Return & Realignment

Way back in the day, the three Rs of learning were colloquially known as "Readin’, Rightin’ and Rithmatic." In today's modern performance shooting, the three Rs become Rise, Return and Realignment, the core mechanics of recoil control.

Interests



Get the best of American Rifleman delivered to your inbox.