Cornerstone Safety Thumb Ledge for KelTec® CMR30™, CP33™, and PMR30™
Black CornerStoner Safety Thumb Ledge for KelTec PMR30, CP33 and CP33 on CP33

Cornerstone Safety Thumb Ledge for KelTec® CMR30™, CP33™, and PMR30™

Part Number:TK08N0326
Average Rating
On sale $27.99
Retail Price:$34.99
Your Savings:$7.00(20%)
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At a glance:

  • Oversized 1911-style safety ledge

  • Simplified safety manipulation

  • Improves hand placement for a better grip


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 Thumbledge from TANDEMKROSS is the ideal upgrade to boost your control!


Made from anodized aluminum for long lasting durability. The oversized, 1911-style safety ledge enhances the external factory safety. This drop-in part is easy to install and does not change the internal components of the gun.


With an easily identifiable “clicking” sound, you can be sure if the firearm moves from a safe or live position, increasing safe handling skills and confidence. The Cornerstone also provides an ideal thumb placement for a secure grip providing consistent hand positioning and helps to control muzzle flip.


Don’t settle for less! Give your KelTec® CMR30™, CP33™, or PMR30™ a boost in control and style with the Cornerstone Safety Thumbledge today!


Supported Models:

  • CP33™

  • PMR30™

  • CMR30™


Don't forget, all TANDEMKROSS products are Made in the USA and come with a LIFETIME guarantee!

WARNING: 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

4 Stars
not as good as expected
It is actually a little far out for me to use as a good thumb rest, but it does look good on the gun but just not as functional as I had hoped for! Maybe they were just in a hurry to have some new dew dad to hang on this new gun?
Did you find this helpful?  9 of 10 Found Helpful
Reviewed by:  from Kenton , Ohio. on 7/3/2019
3 Stars
CP 33 safety thumb ledge
Great to take the safety off but I find it harder than original to put on with thumb.
Did you find this helpful?  8 of 11 Found Helpful
Reviewed by:  from Naples. on 8/1/2019
5 Stars
PMR30 Cornerstone Safety
Excellent mfr'ing. Easily installed. Functions as described. A bit hard to put in "safe" position, but extremely easy to place in "fire" position; suppose that's one of the design points! Just wish a Cornerstone Safety was available for the RH side of PMR30!
Did you find this helpful?  4 of 5 Found Helpful
Reviewed by:  from Birmingham. on 8/5/2019
5 Stars
Looks great and feels good, especially when going from safety to fire. Installation is so easy, that if you can’t do it you shouldn’t own a firearm. The bad news is I’m going to have to order more of them $. Thank you for being innovative.
Did you find this helpful?  4 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Oregon. on 5/10/2019
5 Stars
This is why I love Tandemkross!
Tandemkross is always coming up with products like this. Anyone with a pmr or cmr has hoped for a larger safety selector. Tandemkross has answered. It took longer to get out my tools than to it did to install.
Did you find this helpful?  3 of 4 Found Helpful
Reviewed by:  from Rimersburg. on 6/30/2019

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