XOS™ in KeyMod

(5 reviews) Write a Review

Product Overview

*Sold as ONE Scale*

Our XOS™ 3 sided RailScales offer twice the grip in the same mounting footprint and feature 45 degree wings. These new KeyMod grip scales tightly wrap your rail for one seamless grip area. XOS™ are sold individually and will accommodate most of the popular handguard rail systems. *XOS™ will not fit every rail. Please read "Type Info" Tab to see if our rail grip will fit your AR 15’s 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/M-LOK
  • Dakota Tactical HK Series Keymod/M-LOK
  • Vltor Freedom Rail
  • Parker Mountain Machine Scar Rails
  • KNS Bren 805 Rails
  • HK Parts HK Rails
  • SIG MCX Suppressor Compatible Rails
  • Fortis Night Rail

Type 02 (Not currently available) Fits:

  • Noveske NSR, NHR, NSRM
  • SMOS Arms
  • KAC URX 4 Keymod/M-LOK
  • And many more


  • Short: 4 KeyMod Holes
  • Long: 6 KeyMod Holes
  • Width: 1.165"
  • Thickness: 0.125"
  • Weight: 0.6 oz Ea
  • Length: Long 4.7" / Short 3.2"
  • 416 stainless nuts


(5 reviews) Write a Review

5 Reviews Hide Reviews Show Reviews

  • 5
    XOS mini dot

    Posted by Zach on Oct 1st 2019

    Awesome product! Low profile! Tough as hell, and look great! They provide good grip too

  • 5
    Like it grew there

    Posted by Jack McClane on Sep 19th 2019

    I got the short Honeycomb piece for my PTR 9CT M-lok handguard. Sits perfectly behind my Arisaka finger stop and feels organic to the weapon. It’s not gonna tear up any gloves, but it’s gonna provide a good grip to pull it into my shoulder.

  • 5
    Best Rifle Accessory Ever

    Posted by Sam W. on Sep 19th 2019

    I can't begin to explain how perfect these are. I got a set of the Xos and the cutout Xos-H to pair up with a karve I already had on my rifle. The minidot doesn't look like it would lock in as well as it does, I got it for the look and was pleasantly surprised how well it grips. I am saving up to put these on every rifle I have. Great stuff Railscales.

  • 5
    Minidot is fire!

    Posted by Jess on Sep 19th 2019

    If you don’t have the xos in minidot then you’re support hand hasn’t lived. The new xos is amazing at heat protection and the minidot texture is some kind of witchcraft creating the nest combination of not too aggressive and grippyness. Looking at it I would never have imagined how grippy it is. Ordering a second set of xos for my other rifle.
    We need an anchor with minidot!

  • 5

    Posted by Shawn on Sep 19th 2019

    After trying all of the scales available on the market including the original Railscales, these are without a doubt the best on the market. They have over double the surface area of standard scales and look awesome. The Honeycomb texture is aggressive but not uncomfortable to shoot. Even though they cost a little more than comparable products they perform at a much higher level. Keep up the awesome work guys.