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.
81 Reviews
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Cornerstone Safety Thumb Ledge
This safety is way bigger than necessary and has sharp edges and corners. It will uncomfortably dig into top of the right thumb when using a two handed grip and in the off safety position. With a very fine belt on my sander I sanded half of the width away and smoothed over all the exposed edges and rounded the corners. Black finger nail polish covered the sanded areas. It's now about twice as big as the original Ruger safety but half as big the Tandemkross. I like this modified safety fine. The Ruger appears to be made of one piece of steel. The Tandemkross is aluminum and steel. The Tandemkrosss instruction video is very good.
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cornerstone safety
works great good instructions grip improvement
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Great part,works perfect with the thumb rest. Installation is very easy just follow the instructions.
I would definitely recommend this!
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What a Improvement over the factory safety!
I struggled to manipulate the factory safety on my Mark IV 22/45 and did not need ambidextrous. Ordered the Cornerstone and what a difference. A solid rest for my right thumb and no doubt whether the safety was on or off! Great product and a breeze to install. Put a little VC3 on the screw to make sure it would not back out.
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Great extra
Can't believe I ever went with out one
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Tandemkross
Have purchased several Tandemkross products and find them well made and good value. Had a bit of a problem with the cornerstone.. It happens.. Tandemkross quickly resolved the issue. Excellent products that they support with professionalism. I m a fan.
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Very comfortable
Big upgrade from the stock safety lever which dug into my hand while shooting
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Great Addition
Purchased and installed the Cornerstone safety. Video was succinct and easy to follow. (BTW, Bill is great in the videos.) Great replacement for factory safety. Functions as expected, as all Tandem Ruger parts. Gloss black finish is fine. Only wish is that would be available in flat or parkerized black.
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Safety Thumb Ledge
If you want more stability on such a light handgun, this mod along with the thumb rest is a huge improvement.
