Arken Zero Stop (AZS) & Turret Alignment:
The Arken Zero Stop (AZS) allows the shooter to quickly and consistently return the elevation turret back to the sight in distance (or zero). Please use the 2mm alien wrench to loosen the AZS Set Screw on the elevation turret and raise the AZS Zero Stop.
- ‘Slip’ the turrets: (For both Elevation & Windage Turrets) Hold the turret in place to ensure the turret does not move during this process. Please use the 2mm allen wrench to loosen the THREE turret cap retaining screws on the SIDE of the turret. This will allow the turret to spin freely without rotating the internal components of the turret.
- Set Turrets to Zero “0”: Rotate the turret cap to align the “0” indicator mark of the turret cap with the indicator mark on the scope tube. Carefully, tighten the THREE retaining screws on the SIDE of each turret cap.
- Set the AZS (Arken Zero Stop) Rotate the turret UP 2 clicks. Gently, turn the AZS located on TOP of the elevation turret clockwise to lower until you feel the AZS bottom out. Then, loosen the AZS a quarter turn to alleviate any tension. Finally, tighten the AZS Set Screw against the AZS.
- Rotate the turret back to Zero “0”. AZS IS SET. You should have a firm stop that allows you to consistently return to zero.

About the Zero Stop feature
A zero stop is a feature on a rifle scope that allows the shooter to quickly and easily return the scope to its zeroed position. This is useful for making quick adjustments to the scope, such as when switching between targets at different distances. All Arken Optics rifle scopes come with a built in Zero stop feature.
Often scopes loose a big chunk of elevation when you enable the Zero Stop feature, due to the design of the Zero Stop. In Arken’s case, you loose NO elevation when enabling the zero stop, meaning you have the full range of elevation available to you, even with the Zero Stop enabled.
Zero stops are typically located on the elevation turret of the scope. When the scope is zeroed, the elevation turret is turned until the crosshairs are aligned with the target at a specific distance. The zero stop is then set at this point.
To return the scope to zero, the shooter simply turns the elevation turret until it stops at the zero stop. This will return the crosshairs to the same alignment as they were when the scope was originally zeroed.
Zero stops can be a valuable tool for shooters who need to make quick adjustments to their scope. They can also be helpful for shooters who are prone to making mistakes when adjusting their scope.
Here are some of the benefits of using a zero stop on a rifle scope:
Accuracy: Zero stops help shooters to achieve greater accuracy by making it easier to return the scope to its zeroed position. This is especially beneficial for shooters who need to make quick adjustments to their scope, such as when switching between targets at different distances.
Consistency: Zero stops help shooters to maintain consistency in their shooting by ensuring that the scope is always returned to the same zeroed position. This can be especially helpful for shooters who are prone to making mistakes when adjusting their scope.
Speed: Zero stops save shooters time by making it easier to return the scope to its zeroed position. This is especially beneficial for shooters who need to make quick adjustments to their scope, such as when engaging multiple targets.
All the Arken Optics rifle scopes’ Zero Stop features set in exactly the same way. It is super simple to do. The below applies to the EP5, SH4, EPL4 and the EP8 range…