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


43 Reviews
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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
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Prompt shipping.
Now I can easily reach the bolt release with my thumb
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Bolt Keeper Extended Bolt Stop for Ruger® Mark IV 22/45
A+
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Good product and really needed
With the Gas Pedal and oversized safety as thumb rests, the bolt keeper is hard to use if not extended. This works well.
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Extended Bolt keeper for the Ruger MK IV 22/45 Pistol
Really a great added feature for those of us with big hands. Makes it very easy to drop the bolt when time is of the essence. Makes for faster reloads.