G10 XOS® in MLOK

(112 reviews) Write a Review

Product Overview

XOS® in MLOK - An evolution of our traditional G10 machined RailScales®, XOS® Scales are a 3-sided solution that offer twice as much grip surface in the same mounting footprint. Adding a 135º “wing” on each side of the panel allows for the XOS® to tightly wrap your rail, and provides one seamless grip area for unparalleled handling and heat protection. CNC machined out of high quality US made Black FR4 or our brown terrian colored TerraCore™ (commonly known as G10), our scales provide an unmatched barrier against heat transfer. Available in four popular textures and varying lengths, these scales allow for multiple setups no matter how much rail space you have available. 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® scales to our lineup.

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


(112 reviews) Write a Review

112 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Brandon on May 26th 2023

    These rail covers are well made, great quality and texture. Fitment was perfect on my griffin armament hand guard, no play side to side or up and down before tightening the m-lok fasteners. Look forward to doing business again, thanks.

  • 5
    G10 XOS- You Need These on Your Rifle!

    Posted by Jeff Engel on May 24th 2023

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

  • 5
    G10 XOS- You Need These on Your Rifle!

    Posted by Jeff Engel on May 12th 2023

    These compliment my other Rail Scales guard and KARVE Hans Stop. I bought two to perfectly form a protective shell around my hand guard.

  • 5
    Best on the Market

    Posted by Joseph Wilson on Apr 28th 2023

    Full disclosure. I was undecided between the Q10 and the XOS Railscales. Next, I had to decide between the matrix and dragon pattern. After reading a few reviews, I took the deep plunge for the MLOK XOS Dragon Railscales. And i am ecstatic I did. The Dragon Railscales took up little to no space on my Radian Model 1. And yes, the dragon patten looks exceptionally well on my rails. I have yet to go on the firing range but I am very confident the Dragon Railscales are up to the task. Added bonus - Made in the USA.

  • 5
    G10 XOS

    Posted by Lance on Apr 23rd 2023

    Great product! Definitely the best rail covers available.

  • 5
    XOS Grips

    Posted by SmokeStack on Apr 8th 2023

    In this era of cheaply made and throw away plastic parts. Railscales brings back the good ole days of American made goods that are worth the money. Stronger grip than Coconut Crab and sexier than your wife before she had that third kid. Customer for life, which is easy since I don’t see these ever wearing out. Make the investment, you won’t be disappointed!

  • 5
    Grip is outstanding

    Posted by Josh on Feb 27th 2023

    Lightweight with outstanding grip. The dragon texture is very strong one way and smoother on the opposite. Highly suggest grabbing these. The G10 is worth the extra cost.

  • 5
    Scales look great

    Posted by Kyle on Feb 25th 2023

    They look and feel great. They help with support greatly.

  • 5
    Dragon Scales

    Posted by Ash on Feb 1st 2023

    These are hands down, the best grips on the market. Pick a category, really. Heat Gripping Looks.......C'mon, they're Dragon Scales. What's more badass than Dragon Scales? Nothing, that's what! If one of the other designs catch your eye, get them. You won't be mad about it.