(94 reviews) Write a Review

Product Overview

Now shipping with our new custom Torx T20 fastener!

Karve® - Offering a wide range of functionality, our patented Karve® Bi-Directional Stop is our most popular forward hand control product. Machined out of 6061 Billet aluminum, and available in 3 popular colors finished with a Type 03 Hardcoat Anodizing, the Karve® is a compact and ultralight solution for multiple shooting styles. Using our COG™ Multi-Mount, it is compatible with both KeyMod and MLOK rail systems, in addition to being reversible to accommodate a “push” or “pull” style grip, while only taking up 1 MLOK slot or 2 KeyMod holes to fit inside the cutout of our XOS-H®, makes the Karve® one of the most versatile solutions on the market. 

Ships Free and Made in USA

  • 2 KeyMod Holes or 1 MLOK Slot
  • Weight: 0.4 oz each w/ hardware
  • Height: 1.125" Inches
  • Length: 1.5 Inches
  • Width: 0.625 Inches
  • 6061 Billet Aluminum
  • Includes MLOK & KeyMod Hardware
  • Utilizes our COG™ Multi-Mount
  • Type 03 Hardcoat Anodizing 


© 2023 RailScales LLC All rights reserved. RailScales®, Karve®, XOS-H® are registered trademarks of RailScales LLC.

For all patents and trademarks, see


(94 reviews) Write a Review

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  • 4
    Smaller than anticipated

    Posted by Andy on Nov 22nd 2023

    It was quite a bit smaller than what I envisioned. It will still be useful, but had to rethink its position. It would have been nice to have some instruction for the mounting system that is both MLok and KeyMod compatible. It would have been more useful for the QR code on the box to take me to the instructions rather than the page where I bought it from. Once I figured out I was stupid through the video everything went great. Looks good, fits good, feels good. The trifecta

  • 4
    Would love to see one change

    Posted by Jack Previte on Oct 5th 2023

    In general, i really like the Karve. The shape, quality, texturing is all top notch. If i could ask for one thing, it would be a second option that's scaled to 150% of its original size - something that would compete with the Emissary handbrake in terms of the way it would enable you to grip your handguard. The karve creates a great back stop for C-clamp style grips, but I'd love to be able to get 2-3 fingers up against it for added purchase. The Anchor and RSB are just a little too long/blocky for me; i like the styling of the karve, just need an inch and a half to 1.75" of surface area to grip against.

  • 4

    Posted by Scott on Sep 10th 2023

    Quality finger stop/ hand control product. Very solid.

  • 5
    2nd Karve

    Posted by Jeff Engel on Aug 26th 2023

    I have two Karves on my DDM4v7. They're exceptional as forward and rear hand stops. Paired with Rail Scale G10 XOH-Hs that wrap around my hand guard, I can't think of a better solution that compliments the functionality and appearance of my weapon.

  • 5
    Karve- Incredible Quality

    Posted by Jeff Engel on May 12th 2023

    I just installed the KARVE hand stop on my DDM4v7. It's absolutely the best hand stop i've used. Great ergonomics. Perfectly manufactured. Looking forward to more Rail Scales products on my other rifles.

  • 5
    Effing Awesome

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

    I love these little bastards!

  • 5
    Great product!

    Posted by Jose Martin Villegas on Apr 28th 2023

    Allows for positive control of the weapon while still being compact and lightweight

  • 5
    Karve Hand Stop

    Posted by Lance on Apr 23rd 2023

    The best hand stop on the market IMO. Works great and is fit and finish are flawless. The price is the only issue with this product, it’s not the best value on the market. If you can find a used one on the second hand market you’ll be better off.

  • 5

    Posted by Roland Thompson on Apr 6th 2023

    Great color and I love how compact it is to fit my Honey Badger.