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Leupold Mark 4 ERT 6.5-20x50 M5A2 Enhanced Sniper Rifle Scope

SKU 113780

Export Restrictions
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Due to government regulations and/or manufacturer stipulations we are unable to export this item outside of the United States. Please see our Export Policy.


One of the most dependable, high-performance riflescopes on the market is Leupold's Mark 4 ER/T ("Extended Range/Tactical") series. Mark 4 scopes have an almost cult-like following within the tactical community; they are considered by many to represent the standard by which performance of other scope brands is measured. They are made in the USA, carry Leupold's Lifetime Guarantee, and are worthy of the Leupold name. There may be no better scope series for the money within Leupold's line.

Absolutely waterproof, featuring mil-based adjustments that complement mil-based reticles, superior clarity, a generous range of windage and elevation adjustments, this series of scopes is well-suited to tactical, competition, and hunting applications.

Leupold Mark 4 ER/T Features

  • First-focal plane reticle
  • Lockable, Super Fast-Focus eyepiece
  • Side focus
  • Blackened lens edges
  • DiamondCoat 2 lens surface treatment, for ultimate abrasion-resistance and improved light transmission for improved contrast and clarity
  • 3:1 zoom ratio with crystal clear image quality across the entire magnification range
  • Generous Eye Box
  • Guard-Ion, rain shedding coating
  • Extended Twilight Lens System for optimal color rendition and light transmission in low-light environments
  • Twin-bias spring erector system
  • Waterproof/Fog-proof

With all of these features coming together, you receive a scope that will perform admirably under the harshest conditions. The Leupold Mark 4 ER/T is a scope that is guaranteed to last a life time, will look great on your rifle, and will work every time you pick it up.


  • Item ConditionNew
  • Scope Weight:22 oz.
  • Scope Length:14.5in
  • Magnification Range:6.5-19.5x
  • Scope Objective Diameter:50mm
  • Scope Tube Size / Mount:34mm
  • Turret Adjustment (Click Value):.1mil
  • Elevation Turret Details:auto-locking push-button elevation adjustment
  • Reticle Position:First Focal Plane
  • Reticle Details:Horus H-58 Reticle
  • Field of View:14.30ft@100yds (low mag)
    5.50ft@100yds (high mag)
  • Eye Relief:4.4-3.6"
  • Illuminated Reticle:No
  • Scope Finish:matte black
  • Scope Turret Rotation:Counter Clockwise (CCW)
  • Product TypeRiflescopes
  • UPC030317137809
  • MPN113780

Customer Reviews

Average Rating
May 3, 2017

An absolutely excellent scope at a superb price. While some would not like the system used in this scope for being able to slip the elevation ring, the fact that you have to unscrew three set screws means you will never make a mistake when dialing an elevation. The push button locking system ensures that the dial cannot be shifted accidentally and guarantees that what you dialed will stay dialed until reset. The Horus H58 reticle is an older version of the reticle, but is eminently usable for long distance shooting. The fact that this is a military contract overrun means that you get the ruggedness and simplicity of a Milspec scope at a very affordable price. EXCELLENT service and extremely rapid fulfillment from Eurooptic - Great job!

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October 1, 2018

The scope is everything I expected. Euro optic was great to deal with. No issues with Eurooptic. Just a bit dissappointed with Leupold. I understand that this $3,500 scope is a pentagon over-run, but "really?' ...No manual, cleaning cloth, lens covers etc. Just the scope shipped in a plain-jane brown cardboard box. For what we pay, they could have at least included a bottle of seasoning (see Larue Tactical).

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September 27, 2017

I'm very happy with the scope. It's a great combination of quality and functionality. Excellent service from the good people at Eurooptic.

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August 9, 2017

Tough scope, good features which includes a Horus reticle, priced less than other premium brands, 34mm tube model, lightweight, clear glass, and I don't mind getting more of the same premium brand.

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May 11, 2022

Is this scope still available? If so hat is the price?

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