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The Holosun HS507C-X2 ACSS Vulcan Red Dot Sight features the award-winning ACSS Vulcan reticle — a 10 MOA center chevron with a 250 MOA outer reference ring that eliminates dot-hunting and speeds up target acquisition for shooters of all levels. Built on the 507C X2 platform with Solar Failsafe, Shake Awake, side-loading CR1632 battery with…

Holosun HS507C-X2 ACSS Vulcan – Red Dot Sight | 10 MOA Chevron with 250 MOA Outer Ring | RMR Footprint

The Holosun HS507C-X2 ACSS Vulcan Red Dot Sight is a co-branded optic from Holosun and Primary Arms featuring the award-winning ACSS Vulcan reticle — a revolutionary combination of a 10 MOA center chevron surrounded by a 250 MOA outer reference ring that eliminates the common frustration of hunting for the dot and dramatically speeds up target acquisition for shooters of all experience levels. Built on the proven 507C X2 platform with Solar Failsafe, Shake Awake, and an RMR footprint, the HS507C-X2 ACSS Vulcan is one of the most innovative and practical pistol optics available for duty, EDC, and defensive shooting.

Why the Holosun HS507C-X2 ACSS Vulcan Reticle Changes the Game

ACSS Vulcan Reticle — 10 MOA Chevron with 250 MOA Outer Ring
The ACSS Vulcan reticle on the Holosun HS507C-X2 features a precision 10 MOA center chevron for accurate shot placement at distance, surrounded by an enormous 250 MOA outer reference ring that guides the shooter’s eyes directly to the chevron when the optic is presented. The outer ring is so large it is only visible when the shooter is off-target, acting as an intuitive indicator of where to find the aiming point — eliminating the “hunting for the dot” problem that challenges new RDS shooters and those with astigmatism. The circle can be deactivated to extend battery life when not needed.

Solar Failsafe with Shake Awake for Always-On Reliability
The Holosun HS507C-X2 ACSS features Solar Failsafe — an integrated solar panel that provides backup power and assists automatic brightness adjustment in changing lighting conditions — combined with Shake Awake, which powers the optic on instantly when movement is detected and powers it down after inactivity. Together, these systems ensure the HS507C-X2 ACSS Vulcan is always ready without manual activation and without draining the battery during storage.

50,000 Hours of Battery Life with Side-Loading CR1632
The HS507C-X2 ACSS Vulcan delivers up to 50,000 hours of battery life at Setting 6 from a CR1632 battery. The side-loading battery tray allows replacement without removing the optic from the slide, preserving zero between changes. Last-setting recall ensures the optic returns to your preferred brightness every time it activates.

10 Brightness Settings with Night Vision Compatible Modes
The Holosun HS507C-X2 ACSS features 10 brightness settings including 2 night vision compatible modes, plus a lockout mode to prevent accidental brightness adjustments during carry and holstering.

7075-T6 Aluminium Housing with IP67 Waterproofing
The HS507C-X2 ACSS Vulcan is built from 7075-T6 aluminium with a hard-coat anodized finish, rated IP67 waterproof and shockproof, with fully multi-coated glass for a clear, bright sight picture. Weight is just 1.5 oz, keeping the pistol balanced during carry and holster use.

RMR Footprint for Wide Platform Compatibility
The Holosun HS507C-X2 ACSS Vulcan uses the industry-standard RMR footprint, mounting directly to RMR-cut slides and adapter plates on full-size and compact pistols including Glock MOS, S&W M&P CORE, CZ Shadow 2 OR, Springfield Echelon, Staccato, and Walther PDP.

Holosun HS507C-X2 ACSS Vulcan Full Specifications

• Model: Holosun HS507C-X2-ACSS
• Reticle: ACSS Vulcan — 10 MOA Chevron + 250 MOA Outer Ring
• LED Wavelength: 650nm Red Super LED
• Sight Window: 0.91 x 0.63 inches
• Illumination Settings: 10 total — 8 daylight, 2 night vision compatible
• Lockout Mode: Yes
• Memory Mode: Yes (last-setting recall)
• Shake Awake: Yes
• Solar Failsafe: Yes
• Battery: Side-loading CR1632
• Battery Life: Up to 50,000 hours at Setting 6
• Adjustment: 1 MOA per click
• W&E Travel: ±50 MOA
• Weight: 1.5 oz
• Length: 1.78 inches
• Housing: 7075-T6 Aluminium, Hard-Coat Anodized
• Waterproof: IP67
• Parallax Free: Yes
• Eye Relief: Unlimited
• Footprint: RMR
• Ideal For: Duty carry, EDC, defensive shooting, new RDS shooters, shooters with astigmatism
• Brand: Holosun / Primary Arms (ACSS)