XOS-H™ in KeyMod

(4 reviews) Write a Review

Product Overview

*Sold as ONE Scale*

XOS-H™ is compatible with these products.

XOS-H™ 3 sided RaiScales offer twice the grip in the same mounting footprint and feature 45 degree wings and an accessory cutout. XOS-H™ acts a Hilt surrounding the accessory giving full 360 degrees of seamless integration. These KeyMod grip scales tightly wrap your rail for one seamless grip area. The accessory cutout accommodates our Anchor® , Karve®, Karve-P®, RSB™ and additional future RailScales® products. XOS-H™ are sold individually and will accommodate most of the popular handguard rail systems. *XOS-H™ will not fit every rail. Please read "Type Info" Tab to see if our rail grip will fit your AR-15 rail system.

Type Info:

Type 01 Fits Rails with mounting flats of 0.678" or narrower including the following.

  • PWS Mod 1/Mod 2 rails
  • Bootleg Inc. Rails
  • AAC Teardrop
  • Geissele 4 sided rails (haven't confirmed 7 sided yet)
  • Daniel Defense Slim Rail
  • Midwest SSK/SSM
  • Midwest G3KL/G3ML
  • CMMG Rails Keymod
  • Dakota Tactical HK Series Keymod
  • Vltor Freedom Rail
  • Parker Mountain Machine Scar Rails
  • KNS Bren 805 Rails
  • HK Parts HK Rails
  • SLR AK ION Rails
  • Sig MCX Suppressor Compatible Rails
  • Fortis Night Rails

Type 02 (Not currently available) Fits:

  • Noveske NSR, NHR, NSRM
  • SMOS Arms
  • KAC URX 4 Keymod
  • And many more


  • Width: 1.165"
  • Length: 6 KeyMod Holes
  • Thickness: 0.125"
  • Weight: 0.6 oz Ea
  • Length: 6 Hole - 4.7"
  • 416 stainless nuts


(4 reviews) Write a Review

4 Reviews Hide Reviews Show Reviews

  • 5
    Awesome product and awesome shipping...

    Posted by Alex on Sep 19th 2019

    I debated whether I should invest in a RailScale setup given the costs, but after I received the XOS-H, along with the Karve-P, and two G10 long panels....I couldn't be happier with my purchase. These panels are really innovative, provide excellent grip, and weigh next to nothing. The shipping, and communication with CS was perfect. They really seem to care about your business, and pay attention to the small, yet important details in that regard. Will be doing business with RS in the future whenever it's an option. 5 stars!

  • 5
    Great Product

    Posted by Mike on Sep 19th 2019

    I already had a Karve and regular railscales, but as soon as i saw this i had to get it. Fits perfectly with the karve and makes gripping the end of the handguard more comfortable with a lot of grip. It also looks great on my PWS MK111. Keep up the good work

  • 5
    Completely satisfied

    Posted by Kole on Sep 19th 2019

    There really is no way to explain how perfectly the xos-h fit my palmetto state upper. You have to feel it to really appreciate the perfection in these pieces. I used the Karve-p with this and it really enhances the feel and control of the entire weapon. I will use Rail Scales for all future builds!

  • 5
    Perfect Integration

    Posted by Chris on Sep 19th 2019

    When it comes to controls (vertical grips, hand stops) trying to set them up with rail covers of any kind can be a challenge, gaps and overlaps etc. This solves that problem, provided your using a karve or anchor. The fit is perfect and nearly seamless. I will be ordering more for my AK and 308