TANDEMKROSS Cornerstone Safety Thumb Ledge (Ruger Mark IV 22/45)
Oversized 1911-style safety ledge that mounts on the factory manual safety of a Mark IV 22/45 to give the thumb a shelf.
- Price
- $50
- Brand
- TANDEMKROSS
- Category
- Accessories
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Features
- •Oversized 1911-style safety ledge
- •Anodized aluminum
- •Drop-in install, no change to the internal safety mechanism
- •22/45 grip frames only
- •Uses the factory safety spacer from the original box
- •TANDEMKROSS P/N TK26N0270
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Overview
The 22/45 borrows the 1911's grip angle but not its thumb shelf. The Cornerstone bolts an oversized, 1911-style ledge onto the pistol's factory manual safety so the shooting thumb has somewhere to rest, which locks the grip in place and stops the hand from rolling under recoil.
It is a drop-in part. The Cornerstone attaches to the existing safety and does not touch the internal safety mechanism, so the pistol's safety function is unchanged. Installation uses the factory spacer that shipped in the pistol's original box, documented on page 23 of the Ruger manual; if that spacer has gone missing, TANDEMKROSS sells a Safety Spacer and Screw kit for $4.99 as a separate item.
Fitment is 22/45 only: the Mark IV 22/45, 22/45 Tactical, and 22/45 LITE. Standard steel-frame Mark IV pistols take a different part number, and the Cornerstone for that frame carries a caveat about clearance against target wraparound wood laminate grips that does not apply here. Shooters building a full 22/45 grip package usually pair this with the Accelerator Forward Thumb Ledge on the opposite side of the frame.
Key Features
- Oversized 1911-style safety ledge
- Anodized aluminum
- Drop-in, with no change to the internal safety mechanism
- Uses the factory spacer supplied with the pistol
- Lifetime guarantee against mechanical failure
Pros
- +Gives the 22/45 the thumb shelf its 1911 grip angle implies but does not provide
- +Drop-in install that leaves the safety mechanism untouched
- +Anodized aluminum rather than a polymer clip-on
- +Pairs directly with the Accelerator Forward Thumb Ledge on the same frame
Cons
- −Needs the factory spacer from the original box, or a $4.99 replacement kit
- −The wider ledge can foul a holster cut for a bare Mark IV
- −22/45 frames only, with a separate part number for the steel frame
Detailed Specifications
- platform
- Ruger Mark IV 22/45, Mark IV 22/45 Tactical, Mark IV 22/45 LITE
- Material
- Anodized aluminum
- installation
- Drop-in, uses the factory safety spacer
- sku
- TK26N0270
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