Holosun HS510C | 2 MOA Dot & 65 MOA Circle | Solar Failsafe

The Holosun HS510C is an open-reflex optic built for long-gun use. It employs Holosun’s Multi-Reticle System (MRS) to offer a 2 MOA red dot and a 65 MOA circle that can be selected without re-zeroing. Power options include a CR2032 backup battery plus solar assist (Solar Failsafe) and Shake Awake functionality.

Designed for fast target acquisition and minimal sight picture obstruction, the HS510C is appropriate for carbine and pistol-caliber carbine (PCC) applications.

Product Specifications

• The reticle is 2 MOA dot and 65 MOA circle via Holosun’s Multi-Reticle System.
• The sight window measures 0.91 x 1.26 inches for a wide field of view.
• The optic provides 1x magnification for non-magnified aiming.
• The mount fits a 1913 Picatinny rail and is noted as Picatinny/Weaver compatible.
• The power system uses a CR2032 battery with solar assist (Solar Failsafe).
• The advertised battery life is up to 50,000 hours on the specified setting.
• The unit includes MRS (Multi-Reticle System) allowing reticle selection without re-zeroing.
• Included features list Solar Failsafe and Shake Awake functionality.
• The optic is parallax-free and provides unlimited eye relief.
• Adjustment per click is 0.5 MOA with windage/elevation travel of ±50 MOA.
• The housing is constructed of aluminum with a titanium hood for added resilience.
• The lenses use multi-coated optics for improved light transmission.
• Environmental specs include an IP67 submersion rating and a 1000G vibration spec.
• The product finish and color are listed as Black Anodized and Black Matte respectively in the source data.
• The UPC is 605930624571.

The HS510C brings Holosun features—MRS, solar backup, and a quick-mount footprint—packed into a compact, open-reflex package. Its redundant power options and selectable reticles offer practical flexibility for range use and competition where rapid sight acquisition and minimal obstruction matter.

Related Videos: