Fiber Optic Front Sight for Ruger® Mark IV™ and 22/45™ Install Instructions
At a glance:
- Features highly visible fiber optic light tube for quick target acquisition
- Made of Aluminum for long lasting durability
- Includes red optic tube for customization
Supported Firearms:
- Ruger® Mark IV™ 22/45™ LITE
- Ruger® Mark III™ 22/45™ LITE
TANDEMKROSS sights are protected against mechanical failure for life by TANDEMKROSS’s Lifetime Guarantee. Fiber optic light pipes are highly susceptible to breaking within typical intended use and are guaranteed for the first six months after the time of purchase. Learn more about our warranty and returns policies here.

110 Reviews
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Awesome
Waaaay better than the black front sight that came on my mark 4. Easy to install. I suggest using heat to loosen to take off old and to put new one on. I had problems until I heated it, then it took a couple minutes after heat.
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review
the difference between the stock on is incredible - a must do upgrade
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fiber optic sight
Best $20 bucks you can spend on your Ruger MkIII. I had previously painted the black factory front sight, which helped, but this thing catches so much light it almost looks like it's battery powered. Super easy to install.
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Review
Excellent front sight. Would highly recommend. Thank you.
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Fiber Optic Front Sight for Rugar 22/45
The sight fit the barrel perfectly and the video was of great help. Tandemkross hit the mark again.
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TK FO sight for Mark IV
This sight checks all of the happy boxes: fair price, solid appearance, installs easily, very much improves sight picture. TK upgrades for my Ruger pistols have all been five star.
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Nice sight
Easier to sight in your target if your stock ones are black. Cool that there are two different colors to change out to. Looks great too!
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Best upgrade for a Ruger!
I really, really wish that Ruger would install fiber optic sights on Mk IV's and 22/45's at the factory, but since they don't this cheap and easy upgrade is the first thing that every Ruger owner should do once they buy their pistol. It's very easy to install and 1,000% better than the factory front sight. I recommend this to all Mk Series and 22/45 owners out there because it really does make a huge difference for the better.
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fiber optic
Great front sight easy to install