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Why is my front lens off-axis? Red Dot Lens Positioning: All red dot sights have an objective lens at the front of the unit that is spherical in shape. However, unlike a conventional riflescope, the objective lens in a red dot sight is positioned off axis and appears to be tilted when looking at the sight. This angle of the front lens allows the light generated by the battery powered LED light source inside the unit to be reflected back into the sight. The reflected light becomes the “dot” or aiming reference that the user sees when a red dot sight is switched on. This engineered “bending” of light is what makes today’s red-dot sights so popular and easy to use. Adhesive is used on the inside of the sight to secure the LED to the inside of the tube. By design, the led package intrudes slightly on the field of view.

What is the Holosun Warranty? CLICK HERE

How do I file a Warranty Claim? CLICK HERE

How do the solar optics work? – In automatic mode our solar optics automatically switch to battery power whenever there is not enough light available to power the reticle. In manual mode, the optic will always use battery power. The “solar panel” on top of our optics is actually a photo-diode array (basically a light sensor). It controls both the auto brightness adjustment and provides solar power to the product. Sometimes our customers try to test if battery power is working by covering the panel to see if the reticle will still be there. The problem with that test is that you trick the optic into thinking that you are in very low light conditions. The optic then lowers the reticle intensity down to night vision mode, which means that the user is unlikely to see the reticle in normal lighting conditions. The best way to test if the battery is taking over is to go into a pitch black room and see if you still get a reticle. (In darkness, you should be able to see the night vision intensity setting.) Since the solar panel is also the light sensor, be careful not to cover it up when testing reticle brightness. Also, keep in mind that the reticle intensity will be set to the lighting conditions of the shooter, not the target. If the target is in very different lighting conditions, you should switch the optic to manual mode and adjust the brightness to the appropriate level.

How should I zero my optic? – Caution: Make sure your firearm is handled safely at all times exercise proper range safety procedures. Seek advice from a qualified firearms instructor if you have any questions about this procedure or how to handle your firearm. Each click on our windage and elevation turrets is equivalent to 1/8” at 25 yards; 1/4” at 50 yards; and 1/2″ at 100 yards. Please download our zeroing target, set it up at your chosen distance, and shoot one group. count the number of 1/4″ squares you need to move horizontally and vertically to achieve a bulls-eye and then make the appropriate adjustments. Turning the elevation turret counterclockwise will move the point of impact up. Turning the windage turret counterclockwise will move the point of impact right. Turning either turret clockwise will produce the opposite shift in point of impact. Once adjustments have been made, shoot another group. Repeat as necessary until you are satisfied with your zero. Don’t try to over rotate the turret adjustments. If adjustment begins to require more force, you have reached the adjustment limit and forcing further adjustment may damage the device.

Recommended zeroing distances? – Most people tend to zero somewhere between 25 and 100 yards. This is really a matter of preference and it is often best to consider what your philosophy of use for the firearm is when you decide on a zeroing distance. For example, someone interested in self defense, might zero at 50 yards or less, while someone looking to do short and long distance range shooting might zero at 100 yards. Seek the advice of a qualified firearms instructor to best understand what zeroing distance is best for you.

Product nomenclature basics – HS = Holosun; 1st digit = 4 for 2 moa dot only reticle, 5 for 2 moa dot with a 65 moa circle reticle; 2nd digit = 0 for standard accessories, 1 for upgraded accessories (kill-flash filter, Quick release mount and flip lens covers), 3rd digit = 0, 1 or 2 for an infinity 30 mm tube red dot, 3 for a micro red dot Final letter = C for solar, all others for battery powered only.

Do Holosun Optics Co-Witness? – Yes. All of our infinity sights are set up for a lower 1/3 co-witness on standard AR sights. Most of our micro dots come with a high mount, which is suitable for a lower 1/3 co-witness on standard AR sights and a low mount which is suitable for an AK, shotgun or a pistol. We also sell an absolute co-witness mount designed for standard AR sights, which is compatible with the HS403G, HS403GL, HS503FL and HS503GU.

Which Holosun Optics are compatible with the AACW1.4 absolute co-witness mount? Except for the HS403A, all of our micro red dots will fit on our absolute co-witness mount. That said, the unit is designed specifically for the HS403G, HS403GL, HS503FL and HS503GU. Those are the only optics that will achieve an absolute co-witness height on the mount.

Which Holosun Optics are compatible with the quick release mount? The HS403B, HS403C, HS503C, HS503CU, HS515C, HS515CU, HS503BU, and HS515BU

What mount will the HS507A mini open reflex sight be compatible with? The HS507A will fit on a standard RMR mount.

30mm tube dot vs micro dot… Which one is better? This is a matter of preference. A few trade-offs between these optics are weight, tube diameter, mounting versatility and looks. Feel free to contact us if you are having trouble deciding what works best for your application.

Can I export red dot optics outside the United States? – Holosun Technologies INC maintains several dealer & distributor relationships with partners outside of the United States, so please contact us to see if we have products available for purchase in your country of interest. Within the United States, red dot optics (even ones that are for civilian use) are subject to the Export Administration Regulations (EAR), and export may be restricted by the U.S. Department of Commerce’s Bureau of Industry and Security. By proceeding with a transaction to purchase any restricted item(s), the Customer certifies that (i) the purchase does not require Holosun Technologies INC to export such items, unless Holosun Technologies INC is aware of the export and has obtained the appropriate U.S. Government authorization; (ii) the Customer does not intend to export such items after receipt from Holosun Technologies INC without the appropriate U.S. Government export authorization.The sale, transfer, transportation, or shipment outside of the U.S. of any product prohibited or restricted for export without complying with U.S. export control laws and regulations, including proper export licensing, documentation or authorization, is strictly prohibited and may result in civil penalties and/or constitute a federal crime. Holosun Technologies INC will not engage in any transaction that requires the illegal export of any products and will not assist directly or indirectly with the illegal export or re-export of any products. An accurate Automated Export System (AES) filing must be made, whether or not the exportation requires a license. If you wish to purchase an item for ultimate shipment or use outside of the United States, please indicate this fact in your order. Depending on the value of the order, specific item(s), end user, country of ultimate destination and end use, Holosun Technologies INC may be required to apply for an export license with the appropriate U.S. government agency.