Sig Sauer P365X 9mm X-RAY3 ROMEOZero 3.1" COY Handgun
$537.75
$599.99
(You save
$62.24
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- Firearm Make Fit:
- Sig Sauer
- Barrel Length:
- 3.1"
- Caliber-Gauge:
- 9mm Luger
The Sig Sauer P365X 9mm with ROMEO Zero 3.1" slide in Coyote is a compact, sight-ready handgun built for shooters who want modern optics without the bulk. This complete slide assembly arrives fully outfitted with a factory-installed ROMEO-X COMPACT reflex sight and X-RAY3 day/night iron sights—a combination that lets you shoot with absolute co-witness using standard-height sights. No suppressor-height sight hassles, no adapter plates. It's a drop-in solution for P365 platform users ready to upgrade to a pistol-mounted red dot.
The 3.1" barrel keeps the P365X in the subcompact class, ideal for everyday carry, backup duty, or close-quarters home defense. Coyote Cerakote on stainless steel gives you a durable finish that handles hard use and stands out on the range. The ROMEO-X COMPACT optic uses a 2 MOA center dot with a 32 MOA circle—fast to acquire, easy to manage in bright sun or low light, and compact enough to maintain the gun's snappy profile. The X-RAY3 tritium/photoluminescent sights mean you're never left without a sight picture, even if the optic fails or the battery dies.
This is a complete upper: slide, internal parts, sights, and optic all installed. You'll need to source a P365 or P365X 3.1" barrel and recoil spring assembly separately—they're standard P365 parts and swap in without drama. Whether you're upgrading from iron sights or building out a second P365 platform gun, the P365X 9mm X-RAY3 ROMEO Zero slide gives you pro-level ergonomics and reliability in a package that fits your hand and your holster.
Key Features
- Factory-installed ROMEO-X COMPACT red dot sight with 2 MOA dot and 32 MOA circle reticle
- Co-witness ready with included X-RAY3 day/night tritium sights
- 3.1" barrel length maintains compact, subcompact profile
- Coyote Cerakote finish on stainless steel for durability and aesthetics
- Complete slide assembly with all internal parts pre-installed
- Shield RMS-c footprint optic platform for mounting flexibility
Specifications
| Caliber | 9mm Luger |
| Barrel Length | 3.1" |
| Slide Finish | Coyote Cerakote |
| Slide Material | Stainless Steel |
| Sights | X-RAY3 Day/Night (tritium/photoluminescent) + ROMEO-X COMPACT circle-dot |
| Optic Platform | Shield RMS-c (Compact footprint) |
| Reticle | 2 MOA red dot / 32 MOA circle |
| Optic Ready | Yes |
| Loaded Chamber Indicator | No |
| Integrated Compensator | No |
Frequently Asked Questions
What P365 models is this slide compatible with?
This 3.1" slide assembly is compatible with all P365 and P365X models in 9mm. You'll need a P365/P365X 3.1" barrel and recoil spring assembly to complete the build—these are sold separately and are standard P365 parts.
Can I use this slide with my current P365 lower?
Yes. As a complete slide assembly, it installs on any P365 or P365X 9mm lower. Barrels and recoil assemblies are not included and must be sourced separately to match your frame.
Do I need suppressor-height sights with this optic?
No. The ROMEO-X COMPACT reflex sight sits low enough to the slide that it co-witnesses with the standard-height X-RAY3 sights included on this assembly. You get a clean sight picture without special rear sight hardware.
What's included in the box?
You receive the complete slide assembly with the ROMEO-X COMPACT optic factory-installed, X-RAY3 day/night sights, all internal slide parts, and the slide itself. The barrel and recoil spring assembly are not included and must be purchased separately.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
- Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
- The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
- The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
- Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
- Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
- Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.
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