The Primary Arms Holosun HE507C-GR-X2 ACSS Vulcan green dot sight (brand part no. HE507C-GR-X2-ACSS) pairs Holosun’s open pistol reflex optic with Primary Arms’ patented ACSS Vulcan reticle in green. The Vulcan reticle uses a large circle that guides your eye toward the center chevron, which takes much of the guesswork out of finding the sight picture on a slide-mounted optic. The housing is 7075-T6 aluminum, the battery loads from the side, and Solar Failsafe and Shake Awake help keep the sight running. It mounts on the RMR footprint used by many optic-ready pistols from Primary Arms.

Key Specifications

• The reticle is the ACSS Vulcan, a large circle that guides the eye toward the center chevron.
• The center aiming point is a 10 MOA chevron, and the outer circle drops out of the window when the chevron is centered.
• The reticle color is green, which stands out against many backgrounds in bright light.
• Mounting uses the RMR footprint, which allows direct mounting on many optic-ready pistols and adapter plates.
• The housing is 7075-T6 aluminum, hard anodized for strength and durability.
• The sight is rated IP67 waterproof with 5000G vibration resistance, so it can handle rain, dust and hard use.
• Solar Failsafe lets a solar panel supplement the battery and keeps the optic operating from ambient light if the battery runs down.
• Shake Awake turns the sight on when it detects motion and powers it down during inactivity to save battery life.
• The battery is a side-loading CR1632, so it can be replaced without removing the optic from the slide.
• Magnification is 1x with a multi-coated lens, for fast two-eyes-open shooting.

Frequently Asked Questions

What is the ACSS Vulcan reticle? It is Primary Arms’ patented reticle with a large circle that guides the eye toward a 10 MOA center chevron. If you are off-center, part of the circle appears in the window, and it phases out of the window when the chevron is aligned.

Which footprint does this sight use? It uses the RMR footprint, so it mounts directly to many optic-ready pistols and adapter plates cut for that pattern.

What happens if the battery runs down? Solar Failsafe lets the solar panel keep the optic working from ambient light, and Shake Awake turns the sight on when it senses motion to save battery during storage.

Buy the Primary Arms Holosun HE507C-GR-X2 ACSS Vulcan Green Dot Sight

Slide-mounted dots reward a reticle that tells you where you are off-center, and the ACSS Vulcan does that better than a plain dot. This Primary Arms and Holosun collaboration pairs it with a rugged aluminum body and two battery-saving features. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and see more red dot sights while you are here.