Holosun Red Dot HS503GU collimator

The Holosun HS503GU is a compact collimator sight designed for long guns such as AR15 carbines and semi-automatic rifles. Boasting a closed design, this sight offers an array of features including the Shake Awake battery saving system, the Multi Reticle system for customizable aiming marks, and two mounting bases.

One of the standout qualities of the Holosun HS503GU is its lightweight construction. Precision-milled from 6061-T6 aluminum, this sight is both durable and feather-light, weighing in at just 150 g (with high mount). With "stable zero holding" and unlimited eye relief, it proves to be an excellent choice for sporting rifles, AR carbines, and hunting weapons.

Equipped with lenses coated with multi-layer anti-reflective coatings, the Holosun S503GU delivers exceptional light transmission and a crystal-clear image devoid of parallax error. Its optics ensure that you can acquire targets with ease and precision.

The electronic system of the Holosun HS503GU is built to withstand shock (1000 G), weapon recoil, and various weather conditions, guaranteeing optimal performance and reliability on both hunting and sporting firearms.

Thanks to the Multi Reticle System, users can effortlessly switch between aiming marks. Choose between the classic 2 MOA dot and a 65 MOA circle, providing versatility for hunting, sport shooting, and tactical applications. The red LED displays the selected reticle, and thanks to the single diode emitting all aiming marks, changing the reticle does not affect zero. This makes the collimator ideal for demanding hunting conditions.

The Holosun HS503GU's battery life is truly impressive, boasting an operating time of up to 50,000 hours. This exceptional runtime is made possible by the Shake Awake system, which automatically powers off the LED when the device detects no movement. Reactivating the aiming mark is as simple as moving the weapon, ensuring you never miss a shot. Additionally, users have the freedom to define the duration after which the sleep mode activates, offering customizable energy-saving options.

Incorporating user convenience, the Holosun HS503GU features a side-mounted battery compartment located under the nut on the right side of the sight. This design allows for easy battery replacement without having to remove the collimator from the weapon, distinguishing it from models with bottom-mounted batteries.

The package includes two mounts compatible with Picatinny/Weaver rails: a high mount (1/3 co-witness) ideal for carbines, and a low mount recommended for shotguns and rifles from the AK family. This versatility ensures compatibility with various firearms and provides options for different shooting preferences.

Technical Data:

• Max. operating time: 50,000 hours
• Reticle color: Red
• Aiming crosshairs (reticles): Dot 2 MOA, 65 MOA circle
• IP protection class: IP67
• Power supply: CR2032 × 1
• Gradual adjustment [MOA]: 0.5
• Housing material: Aluminum
• Max. vertical (height) adjustment [MOA]: 50
• Max. horizontal (supply) adjustment [MOA]: 50
• Spot size [MOA]: 2
• Lens diameter [mm]: 20
• Overall height [mm]: 69
• Overall length [mm]: 71
• Weight [g]: 150
• Width [mm]: 36

Included components: Magnifier, Picatinny mount, Optics cleaning cloth, Glass cover, Allen wrench, Battery, Manufacturer's manual, Collimator

Manufacturer: Holosun, USA

Supplier symbol: 17800/18569

In conclusion, the Holosun HS503GU is a feature-packed collimator sight that offers outstanding performance, durability, and versatility. Whether you're a hunter, sport shooter, or tactical enthusiast, this sight's lightweight construction, advanced optics, customizable reticles, impressive battery life, and user-friendly design make it an excellent choice for enhancing your shooting experience.