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SIG SAUER XSeries 3.9in Slide Assemblies Gun Make: SIG Sauer, w/ Free S&H

SIG SAUER XSeries Slide Assembly, 9 mm, w/ Romeo1PRO, 6MOA, 3.9in, Coyote Tan, 8900279
Sig Sauer XSeries 3.9in Slide Assemblies, Coyote Tan, White
SIG SAUER XSeries Slide Assembly, 9 mm, w/ Romeo1PRO, 6MOA, 3.9in, Coyote Tan, 8900279
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SIG SAUER XSeries Slide Assembly, 9 mm, w/ Romeo1PRO, 6MOA, 3.9in, Coyote Tan, 8900279
Sig Sauer XSeries 3.9in Slide Assemblies, Coyote Tan, White
2 of 2 images
Sig Sauer XSeries 3.9in Slide Assemblies, Coyote Tan, White

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Questions & Answers
Does this slide have the slide internals? Plate, extractor, FP, etc. Expert Answer

This Sig Sauer XSeries 3.9in Slide Assembly just comes with the slide, no internal components.

by Hunter, Gear Expert, January 26, 2022
See 3 More Answers
What caliber is this slide. It says 9, 357sig and 40 in the description Expert Answer

These Sig Sauer XSeries 3.9in Slide Assemblies are compatible with 9mm barrels. However, they will accept 9mm, .357 Sig, 40 S&W Fire Control Units.

by Hunter, Gear Expert, May 3, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Excellent, Can't ask for more by The MC, September 16, 2022
This slide and sight combo are excellent. The optics is clear and when you're heading it, you don't notice any tint. The dot is a fine circle with no distortion. I've used it in a competition and had no issues. When I first got it, I took it off and ...
Read More...
1/1 found this helpful
Helpful Negative Review
Doesn’t come with Romeo1 Pro shroud or top plate for slide by Kyle H, Verified Owner, October 19, 2021
I was disappointed to spend over $500 on a slide, red dot, and high-sights, only to miss out on the stamped metal shroud for the Romeo1 Pro. I looked on Sig and they MSRP for $56. That’s insane for a piece of stamped metal. I recently purchased a c...
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5/8 found this helpful
Most Recent Reviews
Great P320 addition at the best price anywhere by Stephen, Verified Owner, March 28, 2023
I have a 1st gen Sig P320 Compact with the optional factory update. I wanted to add an optic. To have my current slide milled, refinished, install suppressor height sites and purchase a quality optic would cost more than $150 more than purchasing thi...
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Most Recent Reviews
Romeo1PRO is trash!!! by Devonth, February 14, 2022
Romeo1PRO is trash. Massive blurry hazy red crazing all around the dot and Rectangular holographic reflections of the emitter glass cover projected on to the screen. So distracting from a clear sight picture. I thought it was just mine so I called Si...
Read More...
1/5 found this helpful
Read All 4 Reviews
Gun Make:
SIG Sauer
Gun Model:
SIG Sauer P320 Carry, SIG Sauer P320 Compact, SIG Sauer P320 RXP
Optic Cut:
SIG Sauer Romeo 1
Color:
Coyote Tan
Included Accessories:
Romeo1PRO 6MOA
Condition:
New

Code: SD9-PSL-SIG205-8900279

MPN: 8900279

UPC: 798681632299

List: $699.00Save 16%
$589.99

Product Info for SIG SAUER XSeries 3.9in Slide Assemblies

This factory replacement, P320 RXP X-series Stainless Steel slide assembly fits Carry and Compact size (X-series & non-X-Series) grip modules. It accommodates our 3.9" barrel.image

This slide comes with our Romeo1Pro mounted on top, ready for use. Equipped with our suppressor height, X-ray night sights.

WARNING: California`s Proposition 65

Specifications for SIG SAUER XSeries 3.9in Slide Assemblies:

Manufacturer: SIG SAUER
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320 RXP, SIG Sauer P320 Carry, SIG Sauer P320 Compact
Optic Cut: SIG Sauer Romeo 1
Color: Coyote Tan
Length: 3.9 in
Fabric/Material: Stainless Steel
Included Accessories: Romeo1PRO 6MOA
Condition: New
Projectile Caliber: .355 Caliber
Barrel Length: 3.9 in

Package Contents:

  • SIG SAUER XSeries 3.9in Slide Assemblies
  • Romeo1Pro mounted on top ready for use.
  • Equipped with our suppressor height X-ray night sights.

SIG SAUER XSeries 3.9in Slide Assemblies Orderable Models

List of Orderable Models

  • SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, Coyote Tan, 8900279 , MPN: 8900279 , UPC: 798681632299 , Code: SD9-PSL-SIG205-8900279

SIG SAUER XSeries 3.9in Slide Assemblies Unavailable & Discontinued Models

List of Unorderable Models

  • USED DEMO, SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, Coyote Tan, 8900279, EDEMO1, Condition Parts Only/Salvage, Wrong Product , MPN: 8900279-DEMO-EDEMO1 , Code: SD9-PSL-SIG205-8900279-DEMO-EDEMO-WP-F
  • SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, White, 8900280 , MPN: 8900280 , UPC: 798681632305 , Code: SD9-PSL-SIG205-8900280
  • USED SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, Coyote Tan, 8900279, EDEMO1, Used, Condition Like New, Inspect and Rebox , MPN: 8900279-EDEMO1 , Code: SD9-PSL-SIG205-8900279-EDEMO-RE-A
  • DEMO, SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, White, 8900280 , MPN: 8900280-DEMO , Code: SD9-PSL-SIG205-8900280-DEMO
  • DEMO, SIG SAUER X Series 9 mm Slide Assembly w/ Romeo1PRO, SIG SAUER P320 Carry/P320 Compact, 3.9in, 6 MOA, Coyote Tan, 8900279 , MPN: 8900279-DEMO , Code: SD9-PSL-SIG205-8900279-DEMO
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Last updated 2026-09-03 UTC.