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.
83 Reviews
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Thumb Rest
You can’t go wrong here! Easy to install, fits my gun and thumb perfectly.
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Good Product
I bought this for my daughter's competition .22. It took awhile to install it because I could not get the screw out of the old safety and had to order a new screw from Ruger. Ruger sent one within a few days. While installing it, I was one of the people who ended up having to reinstall the hammer and sear. On the video, it was somewhat unclear how to reinstall the hammer system. Another video I watched recommended putting the magazine in instead of an allen wrench to hold tension on the sear (magazine safety). That worked for me. I will be taking it to the range today to see how well it works, but it seems like a solid product.
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Excellent especially when combined with the 'hive' grips
I shot my Ruger stock, except for the sights, for a month or so and kept switching the safety on by accident. However, I also disliked the stock grips and decided to upgrade to the hive grips. With the hive grips, I didn't turn on the safety but the knuckle of my thumb rubbed uncomfortably against the safety. So I got the thumb ledge rest and am very glad I did. The grip I have on the gun now couldn't be better. It's too bad Ruger didn't design the gun with good grips and an appropriately placed safety, but Tandemkross always manages to turn good guns into great guns. FWIW, I also upgraded the trigger. I believe it's cheaper to buy the grips, the thumb rest and the trigger all together than to do so separately. I'm fairly confident once you upgrade one thing you'll want to upgrade all three.
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My Review
Installed this part early on after purchasing my Mark IV 22/45 Lite. It was defiantly a good choice. The fit and finish is top quality and installation very easy. My grip hand naturally falls right on the safety and i can take on and off with a slight flip. Once off safety my thumb lays right on top providing a steady and comfortable rest for the thumb. I highly suggest you invest in this upgrade.
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Nice Safety Upgrade
I wish I was able to keep the ambidextrous safety on both sides but as a right hand shooter this is great. Finish looks great and resting on your thumbs on it lets you hug the frame real tight. I wish the angle was pitted down a little lower but overall very pleased with this product.
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Great Upgrade
After purchasing the front thumb rest I just knew that I had to have this one as well, what a difference in control, especially on the Lite version of the Mark IV
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Looks great
I bought this for my Ruger 22/45 and it looks great but was a little tough to install.
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Awesome
This product delivers as advertised. Absolutely perfect. Love it!
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Outstanding Item
I added this item to my Ruger 22/45 LITE. Such a great upgrade to the OEM thumb safety. Ruger SHOULD have used this as their stock safety. It was a bit of a bear to install however. It installs like the instructions show, but the internals move out of place just enough to stop you from pushing the new safety through easily. However, with a few colorful metaphors, I finally got it all to line up and installed. I love this item, and the company’s customer service is grrrrreat!!!!!
