P365-XL 9MM 3.7″ SLIDE ASSEMBLY, SIG-LOC™ OPTIC READY, COYOTE

The Sig P365-XL 9MM 3.7″ Slide assembly is finished in Coyote Brown and Black and fits all P365 9mm grip module sizes. The 3.7″ slide length provides an extended slide look for P365, P365-X, and P365-XL models, while offering a flush-fit look on P365-XMACRO size grip modules, such as the AXG, AXG LEGION, and FUSE.

This slide features the new SIG-LOC (Leverage Optimized Connection) Compact footprint, providing the industry’s strongest, most rigid interface between your optic and pistol slide. Only available on SIG SAUER slides, SIG-LOC establishes five points of contact between the slide and optic to eliminate a shift in zero created by extensive shock from recoil and harsh impacts.

Features:
– SIG-LOC Optic ready, capable of mounting both SIG-LOC Compact and Shield RMS-C footprints.
– XRAY3 Day/Night sights.
– Removable flush-fit optics plate with top accessible screws.
– Coyote Brown PVD.

For use with:
-Standard 9MM, 3.7″ non-threaded barrels

Compatible with all 9mm P365X, P365-XL, P365-XMACRO and P365-AXG grip modules.

Specifications

• Caliber: 9mm
• Slide Length: 3.7″ (XL)
• Optics Interface: SIG-LOC™ Optic Ready
• Finish: Coyote
• Material: Stainless steel
• Serrations: Front & rear
• Intended Platform: P365-XL

What’s Included For Complete Slide

• Assembled P365-XL slide (3.7″)
•  3.7″ Barrel
• recoil spring assembly
• Internal slide components (installed)
• Optic mounting hardware/cover plate (if applicable)
• Factory-installed finish and serrations

What’s Included For Stripped Slide

• Bare Sig P365-XL 9MM 3.7″ Slide
• Optic cut with SIG-LOC™ interface
• No internal components installed
• No sights, barrel, or recoil assembly

How To Install A Sig P365-XL 9MM 3.7″ Slide

• Unload and clear the firearm: Remove the magazine and visually and physically verify the chamber is empty.
• Remove the existing slide: Lock the slide to the rear and rotate the takedown lever downward. Release and remove the slide from the frame.
• Prepare the new slide: If using a stripped slide, install the barrel and recoil spring assembly into the slide before mounting.
• Align the slide: Set the slide onto the frame rails and keep it level.
• Install the slide: Push the slide fully rearward onto the frame until it locks in place.
• Secure the assembly: Rotate the takedown lever back to its locked position.
• Function check: Rack the slide, dry fire (in a safe direction), and confirm proper reset and slide movement.

How To Disassemble A Sig P365-XL 9MM 3.7″ Slide

1. Unload and clear the firearm: Remove the magazine and visually and physically confirm the chamber is empty.
2. Remove the slide from the frame: Lock the slide to the rear, rotate the takedown lever, then guide the slide forward and off the frame.
3. Remove the recoil spring assembly: Compress the recoil spring slightly and lift it out of the slide.
4. Remove the barrel: Lift the barrel up and out of the slide.
5. Internal components (advanced): Further disassembly of the slide—such as removing the striker, extractor, or backplate—requires proper tools and model-specific procedures. Perform this only if necessary and according to the manufacturer’s instructions.

What Is The Sig P365-XL 9MM 3.7″ Slide

• Slide Body: Precision-machined stainless steel
• Finish: Protective Coyote coating for corrosion and wear resistance
• Optic Interface: Reinforced mounting surfaces for durability

Customization Options

• Optics: SIG-LOC™ compatible micro-red-dot optics
• Sights: Night sights or suppressor-height sights (platform-specific)
• Finish: Professional Cerakote or OEM-approved coatings
• Accessories: Use only manufacturer-approved components; professional installation recommended

FAQS

Q: Is the Sig P365-XL 9MM 3.7″ Slide optic-ready out of the box?
Yes, it features the SIG-LOC™ optic interface.

Q: Will it fit a standard P365 (non-XL) frame?
It’s designed for the P365-XL platform. Fitment on other variants can vary.

Q: What’s the difference between a complete and stripped slide?
A complete slide comes assembled with internal components; a stripped slide is the bare slide only.

Q: Are barrel and recoil assembly included?
Inclusion varies by configuration—verify the listing before purchase.

Q: Is the Coyote finish suitable for daily use?
Yes, it’s designed for durability and corrosion resistance with proper maintenance.

Disclaimer

“Sig Sauer” is. a federally registered trademark of SIG Sauer, Inc. or SIG Sauer GmbH & Co.KG. Sig Suaer Slides INC has NO affiliation in any manner with, or otherwise endorsed by, SIG Sauer, Inc. or SIG Sauer GmbH & Co. KG. The use of the word “Sig Sauer ” on this page is merely to identify which firearm these parts or components are compatible with.