Cornerstone Safety Thumb Ledge for Ruger® Mark IV™ 22/45™
Get the new Ruger MKIV 22/45 safety ledge from TANDEMKROSS, one of the best ruger MKIV 22/45 accessories on the market.

Cornerstone Safety Thumb Ledge for Ruger® Mark IV™ 22/45™

Part Number:TK26N0270
Average Rating
Your Price: $49.99
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At a glance:
  • Oversized, 1911-style safety ledge
  • Enhances factory safety
  • Improves hand placement for better grip, control
Whether you’re a competitive shooter working to improve your speed and accuracy or a weekend plinker looking for better control over your pistol, a strong, proper grip is key. The new "Cornerstone" Safety Thumb Ledge for Ruger® MKIV™ 22/45™ from TANDEMKROSS is the ideal upgrade to boost your control!

The oversized, 1911-style safety ledge, made from anodized aluminum, enhances the external factory safety, without modifying the internals of the safety mechanism. This drop-in part is easy to install and does not change the internal components of the gun. Installation of the "Cornerstone" Safety Thumb Ledge for Ruger® MKIV™ 22/45™is also a great opportunity to remove the factory ambidextrous safety, which can pinch some users' fingers while shooting.

The Ruger® MKIV  22/45 aluminum safety ledge offers an ideal thumb placement for a secure grip and provides consistent hand positioning and helps to control muzzle flip. This is one of the best Ruger® MKIV  22/45  accessories for competition shooters. Get your "Cornerstone" today and lay the foundation for a better grip!

Please note: The "Cornerstone" installation utilizes a factory spacer included in your original box. This part is referenced on Page 23 of the original Ruger® manual. If you cannot located this spacer, please contact TANDEMKROSS or Ruger® and we can assist you with locating one.

Supported Models:

  • Ruger® MKIV  22/45™ 
  • Ruger® MKIV  22/45 Tactical™ 
  • Ruger® MKIV  22/45 LITE™ 

This product is protected against mechanical failure for life by TANDEMKROSS’s Lifetime Guarantee. Learn more about our warranty and returns policies here.

WARNING: This product can expose you to chemicals including chromium, which is known to the State of California to cause cancer. For more information go to
5 Stars
Nice addition
I like the cornerstone thumb ledge a lot. I use my pistol mostly for Steel Challenge and the thumb ledge definitely helps to keep a comfortable, strong, and consistent grip. It took me a few 100 rounds to get used to it but I was very happy with it once I did. Another good product from a company that is tops in service.
Did you find this helpful?  17 of 17 Found Helpful
Reviewed by: (Verified Buyer)  from PA. on 2/14/2018
5 Stars
Purchased for my Mark IV 22/45 Target before I even received my gun from LGS. It is a great add on for the Ruger. This provides a consistant grip. Also always know if your safety is off. I have large hands and this fit my grip perfect. Only slight complaint and its not much of one is switching it between safe and fire. The OEM safety provides an audible/ tactile "click" when going between the two. With this, the click was gone. Not a issue for me at all.
Did you find this helpful?  9 of 9 Found Helpful
Reviewed by: (Verified Buyer)  from SC. on 2/5/2018
5 Stars
Very comfortable!
This part is great. Well made and totally fixes the crapy factory safetey that rubs your thumb when shooting.
Did you find this helpful?  8 of 10 Found Helpful
Reviewed by:  from North carolina. on 4/8/2018
5 Stars
This is just another awesome product from TK. I have totally outfitted my Mark IV 22/45 with products from TK and everything is awesome.
Did you find this helpful?  6 of 7 Found Helpful
Reviewed by:  from okc. on 4/14/2018
5 Stars
Buy it now! Changes the whole feel of the gun for the better! Especially if you shoot one handed! Great product!
Did you find this helpful?  5 of 7 Found Helpful
Reviewed by:  from Chicago. on 3/17/2018

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