G10 XOS-H® in MLOK

(66 reviews) Write a Review

Product Overview

XOS-H® in MLOK - This variation of our traditional G10 XOS® Scales offer the same great features, but add an accessory cutout that partners seamlessly with other RailScales® products to give you multiple modular options that best fit your shooting style. While most commonly used at the 6 o’clock position with our Karve®, Karve-P®, Anchor®, or RSB®, the XOS-H® will also fit our QDX® Sling Mount as well as additional future RailScales® products to mount at various positions based on use. CNC machined out of high quality US made Black FR4 or our brown terrian colored TerraCore™ (commonly known as G10), our scales provide an umnatched barrier against heat transfer. They will accommodate most popular handguard rail systems, however please check the specs below to insure these will fit yours. 

Sold Individually

TerraCore™ complements our line of Terra Bronze™ anodized and FDE polymer components as well as third-party branded tan anodized or Cerakoted rail forends. Unlike coating or painting options, our TerraCore™ scales are colored throughout and remain so after CNC machining operations. Offered in the same patented textures and resilient heat protection options you've come to expect. We are excited to introduce TerraCore™ XOS-H® scales to our lineup.

The XOS-H® cutout slot is compatible with these RailScales® products.

The XOS-H® cutout slot is compatible with SureFire Scout Light Pro lights (w/ MLOK mount) with end-user modification. Send an email to for modification instructions. 

Fitment Info: Fits rails with mounting flats of 0.678" or narrower including the following:

  • AAC Teardrop
  • Bootleg Inc. CamLok
  • CMMG KeyMod/MLOK
  • Dakota Tactical HK Series KeyMod/MLOK
  • Daniel Defense Slim
  • Daniel Defense MFR MLOK - DOES NOT fit the MFR XL Rail.
  • Daniel Defense RIS III - Only fits at 6 o'clock, DOES NOT fit at 3 or 9 o'clock.
  • Fortis Night Rail
  • Geissele 4-Sided Rails (Mk4, Mk8)
  • Geissele MK16 (URG-I)
  • HK Parts HK Rails
  • Hodge/FN Wedgelock
  • KNS Bren 805
  • Midwest SSK/SSM
  • Midwest G3KL/G3ML
  • Midwest Gen 2 Extended AK MLOK
  • Parker Mountain Machine Scar Bottom Rail
  • PWS Mod 1/Mod 2
  • Sig Sauer Canebrake SD
  • Sig Sauer MCX-SPEAR LT - Only fits at 6 o'clock, DOES NOT fit at 3 or 9 o'clock.
  • Sig Sauer MCX Virtus SD
  • Vltor Freedom

Does not fit:

  • Brownells BRN-180
  • KAC URX 4 KeyMod/MLOK
  • Noveske NSR, NHR, NSRM
  • Sig Sauer M400 MLOK/Tread
  • Sig Sauer MCX Rattler Non-SD
  • Sig Sauer MCX-SPEAR (308)
  • Sig Sauer MCX Virtus Non-SD

Ships Free and Made in USA

  • Colors: Black FR4, TerraCore™
  • Offered in 3 or 4 MLOK Slots
  • Width: 1.165"
  • Thickness: 0.125"
  • Weight: 0.6 oz each w/ hardware
  • Length: 3 Slot - 4.724" 4 Slot 6.300"
  • 416 Stainless Nuts


(66 reviews) Write a Review

66 Reviews Hide Reviews Show Reviews

  • 5
    Perfect for my DDM4v7

    Posted by Jeff Engel on May 24th 2023

    I absolutely love the look and quality of these Rail Scales.

  • 5
    G10 XOS-H. Perfect Solution.

    Posted by Jeff Engel on May 12th 2023

    What a great product to compliment my KARVE hand stop. Perfectly mounts to my rifle. Looks bad-ass and feels great in-hand.

  • 5
    Great Grips!

    Posted by 2A-PEW-PEW-PAPA on Apr 29th 2023

    They are a perfect fit for the foregrip i got from here and they feel awesome too!

  • 5

    Posted by Josh on Mar 19th 2023

    Great product, completely changed the feel and grip of my hand guard. Rail scales are more refined in the finishing leaving no sharp edges. Very comfortable and strong.

  • 5

    Posted by Andrew on Mar 9th 2023

    For the price you get what you pay for. Buy once cry once. This isn’t your average cover this is railscales. Texture is aggressive but doesn’t overpower you. If you think it’s too hard on your hands be a man. This is meant to be on your rifle. Wet, soft hands the railscales will give you a lot of grip whatever the condition. Would I buy it again? Definitely! I’d want it with all the different textures for my rifles.

  • 5

    Posted by Jamison White on Feb 19th 2023

    Really deck outs my mlok rails!

  • 5
    Awesome product

    Posted by Mike on Jan 27th 2023

    I got one of these with the Karve P and was hesitant b/c of the price but I can say that I really enjoy the combo of the two. They feel great and sturdy and look good as well.

  • 5
    Look great

    Posted by William Heerebout on Jan 7th 2023

    Add these to my Bren2 76 2 x 39 9 inch barrel look awesome

  • 4

    Posted by Robert Knight on Dec 17th 2022

    Great handguard covers and heat dissipation. I bought the matrix amd they are very aggressive which is what I wanted. I have very large hands amd work with them so I tend to go very aggressive with my stippling. I can see these being uncomfortable for my wife's hands. My only complaint is for the price you pay, the portion on the sides where it's hollowed out for 1 mlok space is a bit giving, there's some flex in it which I wasn't a fan of. Maybe they are just my set... not sure.