Holosun HS503G Red Dot with ACSS CQB Reticle

SKU: HS503G-ACSS Categories: , ,


The Holosun HS503G-ACSS is the first red dot sight to feature the ACSS CQB reticle, featuing up to 600 yards of bullet drop compensation, auto ranging and wind leads in a microdot sight with 50,000 hours of battery life.


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Primary Arms and Holosun have combined forces to bring you the power of the patent pending ACSS® CQB reticle in a red dot sight for the first time! The problem with dot sights is that a large dot is great up close but less useful at distances beyond 100 yards, because the dot becomes too large to aim with precision. A small dot used in conjunction with a magnifier fixes that problem, but is slower to acquire in close range snap shooting. The ACSS reticle uses a large chevron that the eye picks up very easily for up close shooting. At longer distances, the tip of the chevron is an infinitely small aiming point perfect for taking precise shots.

The ACSS features three BDC dots underneath the chevron, allowing an unprecedented 600 yards of bullet drop compensation in 7.62 NATO or 5.56 NATO calibers. Auto ranging and wind leads are also incorporated into this smart reticle. A CQB horseshoe grabs the eye instantly for close quarters shooting and also approximates the spread pattern of 00 buckshot at 25 yards. The retical for this sight is a central 2 MOA dot, centered in a 65 MOA circle with four positioning points. The diameter of the circle reticle represents approximately 5’5″ at 100 yards 170cm at 100m.

The HS503G is a proven micro dot sight with an auto-on function that switches on the power with a slight movement of the sight. It comes with a 1913 Picatinny base which is removable, revealing an Aimpoint Micro-compatible base underneath. It also comes with the lower 1/3rd co-witness riser mount shown in the photos.

Exclusive to PrimaryArms.com and Primary Arms authorized dealers

  • Approx 50,000 hour battery life (5+ years) at medium setting
  • Fits any industry standard micro mount and gives stated cowitness
  • Uses 1 CR2032 battery included
  • Visible in bright sunlight
  • Night vision compatible
  • Absence of parallax shift past 33 years
  • Click value: 0.5 MOA
  • Water resistant
  • Fog resistant
  • Bikini lens cover included