"Cornerstone" Safety Thumb Ledge for Ruger® MKIV™
"Cornerstone" Safety Thumb Ledge for Ruger® MKIV™ front view in black by Tandemkross

"Cornerstone" Safety Thumb Ledge for Ruger® MKIV™

Part Number:TK32N0346
Average Rating
Your Price: $59.99
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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 from TANDEMKROSS is the ideal upgrade to boost your control!

Now available for the MKIV, the oversized, 1911-style Safety Thumb 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" MKIVSafety Thumb Ledge is also a great opportunity to remove the factory ambidextrous safety, which can pinch some users' fingers while shooting.

The Ruger® MKIV aluminum "Corner Stone" 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 accessories for competition shooters. Get your "Cornerstone" Safety Thumb Ledge 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 locate this spacer, please contact TANDEMKROSS or Ruger® and we can assist you with locating one.

Supported Models:

  • Ruger® MKIV™ Standard

  • Ruger® MKIV™ Target

  • Ruger® MKIV™ Hunter

  • Ruger® MKIV™ Competition

  • Ruger® MKIV™ Tactical

Please note: Some modification of the grips may be required for proper fit on Hunter and Target models that use the target wraparound wood laminate grips with finger grooves.
5 Stars
Excellent fit and finish
I have been waiting for the MK4 SS version for some time. It fits my hunter perfectly. Same smooth durable finish as halo ring. Excellent product!
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Riverside. on 8/3/2019
5 Stars
Cornerstone Saftey
The Cornerstone thumb ledge solves a major problem of accidentally engaging the safety on the MK IV.
Did you find this helpful?  4 of 4 Found Helpful
Reviewed by:  from USA. on 9/22/2019
5 Stars
cornerstone safety
EXCELLENT EXCELLENT CUSTOMER SERVICE! The safety is very easy to install IF you take your time not to disturb any of the internals. the safety is easy out and back in if you use a follower or long punch. Works perfectly. installed on both of my HABU's.
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Reviewed by:  from Arizona. on 9/16/2020
5 Stars
As with all Tandemkross Gun accessories this Safety Thumb ledge improves your firearm
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Reviewed by: (Verified Buyer)  from Henderson NV. on 5/21/2020
5 Stars
Cornerstone safety
Customer service outstanding! Must have on my Ruger Mk4 Target 5.5 inch! Perfect fit and finish! Went with black on my Stainless Mk4! Looks like it came with gun! Thanks Donny
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Reviewed by:  from Atlanta . on 4/2/2020

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