TANDEMKROSS Ruger® Mark IV™ 22/45™ Cornerstone Thumb Ledge Installation Instructions
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 Cornerstone Safety Thumb Ledge for Ruger® Mark IV™ 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® Mark IV™ 22/45™ is also a great opportunity to remove the factory ambidextrous safety, which can pinch some users' fingers while shooting.
The Ruger® Mark IV™ 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® Mark IV™ 22/45™ accessories for competition shooters. Get your Cornerstone today and lay the foundation for a better grip!
Supported Models:
- Ruger® Mark IV™ 22/45™
- Ruger® Mark IV™ 22/45™ Tactical™
- Ruger® Mark IV™ 22/45™ LITE™
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.
This product is protected against mechanical failure for life by TANDEMKROSS’s Lifetime Guarantee. Learn more about our warranty and returns policies here.
warningWARNING: 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 www.P65Warnings.ca.gov.
93 Reviews
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Cornerstone Safety
I put this on my Volquartsen Black Mamba and really like it. Now there is a comfortable place to ride the safety. The stock Ruger safety doesn’t. Support the thumb. You could put your thumb under the stock safety but that would be bad form. With the Cornerstone safety it’s obvious where the thumb goes. It also make manipulating the safety easier than with the tiny stock safety. Definitely worth the money, highly recommend this mod.
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Makes a huge difference
I have both thumb ledges front and safety ledge paired with tandemkross oversized mag release,halo charging ring,and grips
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Cornerstone safety thumb ledge
Very helpful for proper hand placement, especially for competition shooters, really eliminates accidentally turning on the safety during shooting.
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Work the way it should!!
Very happy with it my thumb sets on it perfect and helps alot!!!!
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Could be better
Needs to be rounded more. Activating the safety on has a squares edge that cuts in your thumb and could be a little wider for more control and textured please.
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Safety thumb ledge
Top quality product, easy to install
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CornerStone safety Ledge
Very good product , worked like a charm. Solved the problem of too loose of a thumb safety. Only complaint I have is that it should come with the spacer & screw or as an option when ordering or shown with the product. The spacer is for if you want to remove the left safety lever. I know it’s suppose to be included with the pistol from Ruger but it was missing in my kit. I had to make a separate order to get a spacer & screw.i e-mailed & called Ruger about spacer but never got it. Otherwise it’s a great product & I’m very happy with the products that i have bought from Tandemkross.
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Nice Addition
Great feature to add to the other Tandemkross mods I have installed on my MK IV 22/45. Because it is the 43921 model with full wood grips, I had to slightly modify the left grip for clearance. Easily done with a Dremel and looks and functions perfectly. Thanks.
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Thumb ledge
I really like this addition for my pistol. This along with the accelerator pedal give me more control on my Ruger 22/45.
