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Product Overview

Our Karve® Bi-Directional Stop which fits both MLOK & KeyMod rails with our COG™ Multi-Mount, and includes hardware for both. Being reversible it allows for either a "push" or "pull" thumb over bore style grip. Focusing as much attention on the contoured front surface as well as the jimped rear, Karve® allows for numerous shooting positions and styles in a compact ultralight package.


  • 2 Keymod Holes or 1 M-LOK Slot
  • Weight: 0.4 oz
  • Length: 1.5 Inches
  • Width: 0.625 Inches
  • 6061 Billet Aluminum
  • Includes M-Lok & KeyMod Hardware
  • Utilizes our COG™ Multi-Mount
  • Type 03 Hardcoat Anodizing 


(18 reviews) Write a Review

18 Reviews Hide Reviews Show Reviews

  • 5
    This is by far the best option on the market.

    Posted by Eric B Kleis on Nov 7th 2019

    I have been building a new AR for a few months and I thought the build was complete and it worked really well, but something just seemed like it was missing. I tried several forward grips , stops and it just didn't feel or look right. I saw the Karve and I wasn't sure if it was really worth the money but I had to know. I got it a few weeks ago and I'm completely blown away. It's actually 6061 aluminum everything else out there is polymer. It's just as light but far stronger, just looks sick on any rifle I own and I can put it on anything I own being it's easy to change from keymod or mlok. Fits flush and is of insane quality. The price is actually a bargain for what you get. Awesome job guys. Only regret I have is I can't post a picture of the finished build on here. Will definitely buy more in different colors in the future.

  • 5
    Truexodus sent me here

    Posted by Nick on Oct 20th 2019

    I purchased a karve and a couple of G10 panels to mitigate some heat and provide a positive indexing point. The products that Rail Scales design and sell have given my hand an exceedingly comfortable experience while grabbing the front of my AR.

    I'd highly recommend anyone to purchase this "expensive piece of plastic". These are the only option for someone looking for the best of the best in grip and heat mitigation for section of their rail.

  • 5

    Posted by Benjamin Londrillo on Sep 30th 2019

    Was looking for something that not only worked great, but integrated seamlessly with my rail. I really didn't want something so large that it took away from the aesthetic of my custom build, but without sacrificing a functioning firm grip. The Karve was exactly what I was looking for. It offers great ergonomics, aesthetics, practicality and usability without drawing too much attention to itself. Super lightweight, durable, and just plain sexy. Shipping was fast and installation was easy.

  • 5
    Great minimalist hand stop!

    Posted by Evan on Sep 21st 2019

    I ordered a Karve to go along with and XOS-H. Seamlessly integrated rock solid piece of hardware. I have seen people comment about the prices of the products. Save up your money and purchase. You wont be disappointed in the products or customer service.

  • 5
    Best hand stop ever

    Posted by Robert on Sep 17th 2019

    I’ve tried almost every hand stop out there in this is by far my favorite. I have one on every AR I own.

  • 5
    Perfect fit

    Posted by Edward F. on Sep 17th 2019

    I have tried out a number of hand stop style grips out there, and this thing fits my hand perfectly. Not too aggressive, plus it's small and light. Great product!

  • 5
    Top notch in every way

    Posted by Allen on Sep 17th 2019

    Everything about my experience with Railscales was outstanding. Their website is fresh, the checkout process is fast, their customer service when I reached out with a question was amazing (Thanks Jake!), their ship times are quick, and their packaging and products are self evident of a product that has a lot of time and energy put into it. Couldn't be happier with my purchase and will definitely be getting more from them in the future!

  • 5
    More than I usually pay, but well worth it

    Posted by Tom M. on Sep 17th 2019

    I tried to build a rifle on a budget, but after having numerous people recommend this to me I had to try one out. Couldn't be happier. Might have to eventually pick up some scales to match.

  • 5
    Nothing else like it!

    Posted by Jared K. on Sep 17th 2019

    I have tried a lot of different styles of handstop, and there is just nothing that compares to this low profile design. Really cool product.