Holosun Red Dot HS403B collimator

TheHolosun Red Dot HS403B is a compact collimator sight with a closed design, equipped with an aluminum housing, Shake Awake battery saving system and two mounting bases.

TheHolosun Red Dot HS403B is designed for the use of long guns including AR15 carbines, semi-automatic rifles.

Lightweight construction

The body of the sight is made of 6061-T6 aluminum by precision milling. The device has a lightweight and sturdy construction weighing only 124 g with the high mount.

TheHolosun Red Dot HS403 features "stable zero holding", has no parallax error, and its optics provide unlimited eye relief, making it suitable for use on sporting rifles, AR carbines and hunting weapons.

Optics

The Holosun Red Dot HS403B uses lenses coated with multi-layer anti-reflective coatings, which provide high light transmission and a clear and sharp image free of parallax error.

Electronic system

Thecontrol system and diode are resistant to shock (1000 G), weapon recoil and weather conditions, making the device work efficiently and stably on hunting and sporting weapons.

Universal aiming point

The sight uses a 2 MOA red dot aiming point, which is great for dynamic and precision shooting.

Battery saving system

Theimpressive battery life of up to 50,000 hours is due to the Shake Awake system , which automatically turns off the LED when there is no movement, and the device goes into sleep mode.

Re-activating the aiming mark requires only moving the weapon. The user can independently define the time after which the sleep mode is activated.

Convenient battery installation

An element that many shooters pay a lot of attention to is the battery mounting method. In the Holosun Red Dot HS403B, the battery is mounted on a sliding tray, secured by two Torx screws.

Such functionality allows changing the battery without removing the collimator from the weapon, as is the case with models with the battery located on the underside.

Two mounts

The set includes two Picatinny/Weaver rail mount s : a high one (1/3 co-witness) intended mainly for carbines and a low one recommended for shotguns.