Tandemkross Cornerstone Safety Thumb Ledge for Ruger MKIV 22/45

• 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 .

California Residents: AB 1263 - Action Required

California law (AB 1263, effective January 1, 2026) requires additional verification before certain items can be shipped to a CA address.

To place an order you must:

1) Provide a clear photo of a valid government-issued photo ID

• Must be 18+

• Shipping address must match the ID

2) Acknowledgement

You must confirm that:

• You are at least 18 years old

• You understand CA law restricts certain firearm-related activities without proper licensing

• You agree that an adult signature will be required upon delivery

• You agree to comply with AB 1263 requirements

If you do not want to provide a picture of your photo ID and give your acknowledgement, you may not order this item.