NineX19 X1 RMR Cut Slide for Glock 34 Gen 3


Precision machined lightweight slide upgrade for Gen 3 Glock 34 pattern pistols

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The NineX19 X1 Slide strikes a perfect balance between form and function. The precision machined windows give the X1 its “Gucci” aesthetic while the aggressive rear serrations and RMR-pattern optics cut provide functional performance and capability. Machined from 17-4 stainless steel billet and coated with either black nitride, FDE Cerakote. or Sig Dark Gray Cerakote, the X1 slide will stand up to whatever abuse you can dish out, be it long days in a holster or rigorous use at the range.


  • Compatible with Gen 3 Glock 34 models and most G34-pattern builder platforms (eg: Nomad Defense, Polymer 80, Lone Wolf, etc) (NOTE: May also fit Gen 4 & 5 frames with minor modifications.)
  • RMR-pattern optic mounting cut (includes matching cover plate)
  • Available in Black Nitride, FDE Cerakote, and Sig Dark Gray Cerakote finishes
  • Manufactured from 17-4 stainless steel for optimal performance, reliability, and service life
  • Reduced reciprocating weight (vs OEM slide) lowers felt recoil and improves accuracy on follow-up shots
  • Generous windows dissipate barrel heat for prolonged service life and enhanced performance


  • Lightning Fast Processing & Shipping
    Most orders are delivered to your door anywhere in the U.S. in 2 to 3 days, starting at $5.
  • Pew With Purpose
    The 9X function-first design philosophy prioritizes improved performance and capability over factory components. Our team is comprised of competition shooters, law enforcement officers, and active duty military personnel whose real-world expertise drives our product development.
  • Premium Service Is Our Mission
    Our responsive team of firearm enthusiasts / experts are on hand to answer any questions and provide suggestions to ensure you have a smooth running pistol.
  • No Gimmicks, Just Gun Parts
    Each product shows our true stock level – no backorders, no vague lead times. Product out of stock? Just sign up for the re-stock notifier and you’ll get an email the minute it’s back on the shelf.


This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.

Weight12 oz
Dimensions8 × 2 × 2 in

Black Nitride, FDE Cerakote, Sig Dark Gray Cerakote

1 review for NineX19 X1 RMR Cut Slide for Glock 34 Gen 3

  1. Nick N. (verified owner)

    LOVE, pure love.

    To me, best design on the market. There’s others that follow very close, but I went with this slide and would never go back.

    I have run this slide since the day I received it, ran at least 800 rounds with no issues.

    Things to be aware of:
    This slide is extremely light. Not in a bad way, doesn’t feel like it’ll break or crack at all.
    Just be aware, with the factory polymer guide rod and stock 17pound spring it is SNAPPY.
    Expect excessive recoil feel unless you upgrade to a stainless steel guide rod.

    I installed a stainless steel guide rod and 15 pound spring and it cycles perfectly now.

    That is not a fault though, just naturally lighter from all the weight cut down of course.

    Would highly recommend!! Thank you ninex19.

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