OEM Upper Slides

P229 LEGION 9MM 3.9″ SLIDE ASSEMBLY, OPTIC READY, GRAY

(25 reviews)
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In stock

419.99$

Factory replacement 9MM slide assembly for the LEGION P229 RX. Includes suppressor-height XRAY3 day/night sights installed. R2 optic-ready cut for your favorite reflex sight.

3 in stock

THESE HAVE BEEN DISCONTINUED AND ONCE THEY ARE GONE THEY ARE GONE FOREVER! DON'T WAIT!!! 

Description

P229 Optic Cut Ready Slide For Sale

SIG P229 Legion 9MM 3.9″ Slide Assembly, ROMEO1PRO

Factory replacement p229 slide optic ready assembly for the LEGION P229 RX. Includes suppressor-height XRAY3 day/night sights installed. R2 optic-ready cut for your favorite reflex sight.

The SIG Sauer P229 Optic Cut Slide is a factory-engineered upgrade that enhances precision, adaptability, and modern optics compatibility. It stands out for its balance of compact size and robust performance, though it has trade-offs compared to larger SIG models like the P226

Overview of the P229 Optic Cut Slide

The p229 slide optic ready is a factory replacement or upgrade designed for the SIG Sauer P229 pistol. It comes optic-ready, meaning it can directly mount popular red dot sights like Holosun or Trijicon without additional machining. This makes it a strong choice for shooters who want to modernize their P229 platform with enhanced sighting systems.

Pros of the p229 slide optic ready

  • Optic-ready design: Direct compatibility with red dot optics improves target acquisition speed and accuracy.
  • Factory precision: Manufactured by SIG Sauer, ensuring OEM-level fit, finish, and reliability.
  • Compact versatility: The P229’s 3.9″ slide balances concealability with performance, making it suitable for both duty and concealed carry.
  • Durability: All-metal construction with options for Cerakote or nitride finishes provides long-term wear resistance.
  • Customization options: Available in multiple calibers (9mm, .40, .357 SIG) and finishes, giving flexibility for different shooters.

Cons of the P229 Optic Cut Slide

  • Smaller sight radius: Compared to the P226, the shorter slide reduces iron sight accuracy at longer ranges.
  • Weight: Heavier than polymer competitors, which may be less ideal for extended concealed carry.
  • Price: Factory optic-ready slides retail around $349.99, which is higher than aftermarket alternatives.
  • Limited aftermarket: While optic-ready, customization options are fewer compared to Glock slides.

Reason to buy the P229 Optic Cut Slide

  1. Modern performance upgrade: Instantly transforms your P229 into an optic-ready platform without gunsmithing.
  2. Balanced design: Compact enough for concealed carry yet robust enough for duty use.
  3. OEM reliability: Backed by SIG Sauer’s engineering standards, ensuring seamless integration and long-term dependability.
  4. Future-proof investment: Red dot optics are becoming the standard in both competition and defense; this slide keeps your firearm relevant.

Key Features of the p229 slide optic ready:

-Optic ready. Compatibility: ROMEO1Pro, ROMEO2, PRO, and RMR (requires sealing plate) footprint.
-XRAY3 Day/Night Suppressor height sights.

*Please Note*
This slide for 9MM barrels only and is not compatible with .40, .357, or .45
Works with LEGION, P229, and M11-A1 pistols in 9MM.

 

Key Features:

  1. Optic ready. Compatibility: ROMEO1Pro, ROMEO2, PRO, and RMR (requires sealing plate) footprint.
  2. XRAY3 Day/Night Suppressor height sights.
Please Note This slide for 9MM barrels only and is not compatible with .40, .357, or .45 Works with LEGION, P229, and M11-A1 pistols in 9MM.

Specifications

Model M11-A1, P229
Caliber 9mm Luger
Color Gray
Application Self-Defense, Target Shooting, Concealed Carry, Everyday Carry (EDC), Competition Shooting, Law Enforcement / Military, Tactical, Range
Loaded Chamber Indicator No
Barrel Included No
Recoil Assembly Included No
Barrel Length 3.9 in [99.06 mm]
Sights XRAY3 Day/Night Suppressor Height Sights
Optic Ready Yes
RX Footprint PRO
Electro-Optic Installed No
Pistol Size Carry, Compact
Slide Material Stainless Steel
Integrated Compensator No
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25 verified ratings
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  1. Osmond

    Replaced original slide with optic ready slide. Shoots like a charm. To date my personal experience with Sig has been outstanding both in products and service. I have no issues recommending this company to my family and friends. I am a loyal fan of Sig and will order additional products in the future. Great company.

  2. Marshall

    This slide was in stock, and arrived in 4 days! Exactly what I wanted, and exactly what I received!

  3. Ollie

    Fits perfectly, so glad I could get the slide. Wish I could have gotten it I the same color. I hope sig Sauer would make slides for the 40 cal. 9 platinum

  4. Timothy

    Slide seems to be of high quality. Wished all Sigs came with optic ready slides. Sold original slide online so exchange was cheaper and safer than getting a slide milled.

  5. Micheal

    This 9mm slide went onto an older 40 SampW/.35 SIG frame to make another carry option, something that can go urban and off road for most of the local wildlife threats. Between the new slide and a Grayguns flat trigger, I couldn’t be happier. It’s accurate and dependable, with no malfunctions whatsoever after 00+ rounds. It’s neat to have one firearm that can operate with 3 calibers. I very much recommend it.

  6. Cruz P

    Purchased this slide because I’ve switched over to shooting a dot. Works just fine and the finish matches.

  7. Kenneth

    so far Ixm really glad I bought this for my sig 9 very nice and feels good for 419.99 dollars it was well worth it now working on buying red dot for it .Just perfect.

  8. Sean

    Shipped quickly and is an excellent addition to my edc! I needed an optic cut slide and did not want to cut my personal slide so this fit the bill perfectly!

  9. Alan

    Perfect fit and looks great. It is like having sd and second gun.

  10. Wilkins

    Order this to replace the original none optic ready slide on my Legion and love it. Still shooting with just irons for now

  11. Burge

    looks great fit perfect

  12. Lloyd

    Fit and finish was perfect. Totally drop in no fitting necessary.

  13. Lesley J

    The slide is just like the none optic cut slide in quality and finish. It fit and cycled perfectly. I purchased the Romeox pro and it fit like a glove in the optics cut. I am very happy with the combination.

  14. Gregory

    Excellent quality as always, and expected from sig

  15. Edmund

    I own meny hand guns including kimber, staccato, and Nighthawk but my 229 in quickly becoming one of my favorites

  16. Obi S

    Very glad I finally got this as a long-overdue upgrade to my standard P229 Legion. Can’t beat that gray finish. Mounting a Romeo X Pro was easy and the suppressor height sights provide a nice co witness. It’s also nice that the slide comes with all of the internals so only the barrel and recoil spring need to be switched.

  17. Lance

    Fir and finish was perfect. Great upgrade for my P9 Elite

  18. Eric R

    I wanted an optic-cut slide for my P9 SAO, but I’m not a gunsmith, so I needed a slide with all the guts installed. This slide fit the bill.

  19. Leon

    This is a much needed upgrade to my older P9 (non-optics ready model purchased about 15 years ago).

  20. Lambert

    Itxs a great slide I love it works perfectly I can fit an optic on it and it just looks great thank you sig Sauer you are a great company

  21. Ed W

    Perfect fit, excellent
    Performance, more love for my p9.
    This is my second slide got the Pro line
    For my p6 also
    A great buy. Thanks guys

  22. Gustavo

    The 9mm barrel and slide for my P9 worked flawlessly

  23. Jessie

    I got this slide to bring my 9 back to stock for competition and it fit perfectly, color was great, and paired with an OEM barrel and Defender XL, printed a 5-shot quot group at 5 yards with my competition ammo. The high sights matched up very well to the optic and gave me backup sight capability without crowding the window or having to hunt for the irons.

  24. Charles

    Love it! Perfect fit and a great addition to on of my favorite guns!

  25. Ricky

    Arrived as expected. I wish I had waited two more days to order this as I would have been eligible for the give away for over $50 purchase – a pellet pistol I believe.

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P229 LEGION 9MM 3.9" SLIDE ASSEMBLY, OPTIC READY, GRAY
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