As requested by popular demand, we are excited to release the new “Bolt Keeper” Extended Bolt Stop for Ruger® Mark IV™ 22/45™!
- Aggressive step geometry for maximum traction
- More purchase than factory lever
- Machine cut locking feature for secure installation



38 Reviews
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Improve the bolt lock on Ruger 10/22
Works better than advertised. Install could not be easier
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Wife had trouble with stock bolt stop
Purchased this for my wife because she couldn't physically reach the stock bolt stop. This worked perfectly, she can reach it without any trouble. The quality of the part is also top notch, great CNC work.
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extended bolt stop
Excellent product.Well made.Easy installation.Excellent company.The company also has install instructions for their products.
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MAG RELEASE
Would buy again. Tandemkross make.s good products. Great customer service also and installation videos.
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Bolt Keeper Extended Bolt Stop
I’ve come to expect high quality products from TK and this is another part improvement with the shooter in mind. Just enough extension to aid in quick and positive bolt lock and release, and not too large to prevent inadvertently releasing the bolt! Some grips will need a little in letting to work reliably and a Dremel type tool will make quick work of this minor issue. My short thumb can release the bolt now without having to shift my grip!
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Easy to install. Since larger than the factory it allows easier access.
noted above
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Cornerstone thumb safety
I love it. It makes application to engage and disengage so much easier.
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Bolt Keeper
Great accessory that actually works as advertised. Gives you the added perch your thumb needs to drop the bolt.
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Extended bolt keeper
This is the second order for another project Great product