Tandemkross "Eagle Eye" Rear Peep Sight for Williams Fire Sights - Matte Black (TK19N0343BLK1)
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Speed up target acquisition and sharpen your sight picture with the Tandemkross "Eagle Eye" Rear Peep Sight for Williams Fire Sights. Designed specifically for rimfire competition shooters and target enthusiasts, this ghost-ring style aperture replacement converts standard U-notch fiber optic rear sights into an intuitive peep sight configuration.
CNC-machined in the USA from lightweight, aircraft-grade billet aluminum and finished in a non-reflective matte black anodize, the circular aperture fills your peripheral field to draw your eye naturally toward the center—allowing you to focus instantly on the front sight post. Ideal for Steel Challenge, speed shooting, and target plinking, it drops right into compatible Williams Fire Sight housings while preserving full functionality of factory windage and elevation adjustments.
Key Features:
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Intuitive Sight Centering: Circular aperture ghost-ring design forces your eye to naturally center the front sight for faster target acquisition on round steel targets.
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CNC Machined Aluminum: Precision-crafted from durable billet aluminum and anodized in matte black to absorb ambient light and reduce glare.
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Full Adjustment Retention: Preserves complete function of your existing rear sight's windage and elevation controls.
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Easy Drop-In Installation: Simple installation by backing out the windage screw and replacing the rear fiber optic element with the Eagle Eye aperture.
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Made in USA & Lifetime Guarantee: Manufactured in the United States and backed by Tandemkross's lifetime performance guarantee.
Firearm & Sight Compatibility:
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Compatible Sight Systems: Designed to fit Williams Fire Sight housings featuring removable elevation control and U-shaped rear fiber optics.
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Supported Firearms (equipped with Williams Fire Sights / Tandemkross Eagle Eye Sights):
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Taurus TX22 (with Tandemkross Eagle Eye sight set)
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Ruger Mark II, Mark III, Mark IV, and 22/45 series
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Smith & Wesson SW22 Victory
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KelTec CP33
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Ruger Single-Ten
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Frequently Asked Questions
Does this Tandemkross Eagle Eye peep sight require an FFL transfer?
No. Iron sight components and replacement parts are non-serialized firearm accessories and ship directly to your home address.
Does this part replace the entire rear sight base?
No. The Eagle Eye is a replacement aperture insert that drops into your existing Williams Fire Sight rear housing by removing the original rear fiber optic insert.
Will this work with factory standard iron sights?
It requires a compatible Williams Fire Sight or Tandemkross Eagle Eye rear sight assembly with a removable rear fiber optic element.
Do I lose windage and elevation adjustments after installing this?
No. The peep sight aperture utilizes the original windage screw mechanism, maintaining full elevation and windage adjustability.
⚠️ PLEASE NOTE: This listing is for the rear peep sight aperture insert only. Front sight, rear sight main housing, screws, and firearms pictured in demonstration materials are NOT included.