Fiber Optic Front Sight for Ruger® Mark IV™ 22/45™ LITE


(92 reviews) Write a Review
0.30 LBS
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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
Upgrade your favorite Ruger® MK Series® pistol with the new TANDEMKROSS Fiber Optic Front Sight!
The upgraded sight is designed to collect surrounding light rays to offer you superb visibility, even in dark conditions. This drop in replacement unit will greatly increase your sight acquisition over the iron sights. Improve your accuracy today with the new TANDEMKROSS Front Fiber Optic Sight for the Ruger® MK Series® pistols!
Please note: *This sight is designed as a factory replacement to a drilled and tapped Bull barrel or Lite barrel Mark series pistol. *WILL NOT accommodate the Tapered barrel Mark Series pistols.*
*Please Note * The included installation screw will accommodate the LITE barrel Ruger® MK Series® pistols. Other MK Series models may require the factory sight screw.
*Please Note * The OEM picatinny rail may partially block the fiber optic on some models.
Supported Firearms:
  • Ruger® MKIV™ 22/45™ LITE
  • Ruger® MKIII™ 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.

WARNING: This product may expose you to chemicals including chromium, which is known to the State of California to cause cancer. For more information go to

92 Reviews

  • 5
    Hi Viz front sight

    Posted by Paul Hunt on 6th Sep 2023

    Added this front sight to a Ruger mark IV lite it made a world of difference over the stock front sight

  • 5
    Fiber Optic Sight

    Posted by Chris on 5th Sep 2023

    Great product, great price and fast shipping. Easy install and would recommend to anyone with the Ruger Mark IV as an upgrade.

  • 5

    Posted by James on 28th Aug 2023

    Very good sight, especially for the older eyes.

  • 5
    front sight

    Posted by Michael on 17th Aug 2023

    I purchased this front sight as a replacement for my Ruger MK IV 22/45. It is a great improvement over the stock front sight, much easier to see and acquire the target. I highly recommend this replacement sight.

  • 5
    Front sight for ruger

    Posted by Tom on 11th Jul 2023

    Excellent product, perfect fit. Just what these old eyes needed.

  • 5
    Front site

    Posted by Nancy on 6th Jul 2023

    Very easy to put on, just remember to use thread lock to secure to gun, vibration will unscrew it

  • 5

    Posted by James Twiggs on 8th Aug 2022

    Beats Dawson and LPA for clarity and size correctness. Color is awesome. I would love to have this on my Sig P320 compact pistols.

  • 5

    Posted by Don on 2nd Aug 2022

    Easy to install once you get the screw trimmed down to length. works great, helped me tighten up my groups

  • 5
    Fiber optic sight for 22/45

    Posted by Chris S on 20th Jul 2022

    Great addition to my Ruger 22/45. Sight acquisition is much easier indoors and in low light conditions. Easy install with the factory sight screw. The supplied screw is too large for the 22/45 bull barrel.