ACSS Vulcan Reticle Receives Utility Patent

by
posted on December 9, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Patent Office

The U.S. Patent and Trademark Office has issued a Utility Patent to the ACSS Vulcan reticle system, which is featured exclusively in Primary Arms Optics’  co-branded Holosun HS507C-X2 ACSS mini-reflex sight. The patent was granted to ACSS’ creator, Dimitri Mikroulis, who maintains long-term collaboration and exclusivity with Primary Arms Optics.

Unlike traditional reflex reticles, the ACSS Vulcan features a combined center aiming chevron and a large outer circle. When looking through the sight at arm’s length, this circle falls outside the optic window. However, if the optic is off center, the circle will show the error and provide feedback to guide the user back to proper alignment.

“The design and technology behind the ACSS Vulcan reticle set it apart from anything else on the market,” said Stephen Morgan, director of product marketing at Primary Arms Optics. “This utility patent reflects the ingenuity put into this unique aiming system, which addresses some of the most challenging problems associated with mini reflex sights.”

The utility patent grants protection for the reticle’s unique visual correction system and grants legal recourse should companies inadvertently or deliberately infringe on the design. The innovative system will prove invaluable in high-movement, dynamic shooting applications, where the user might engage a target from an irregular shooting position, such as inverted kneeling, rollover prone or weak-side one-handed. The approach is also beneficial under night vision, where focal settings and device length can limit the visibility and acquisition speed of traditional reflex reticles. Under night vision, the ACSS Vulcan design provides an intuitive ‘heads up’ style reticle view, making it easy to acquire and maintain on target.

Primary Arms Optics was founded in 2008 and is based in Houston, Texas. Holosun has been creating high-quality optics since 2013 and is headquartered in the City of Industry, Calif.

Latest

Springfield Echelon Pro 01
Springfield Echelon Pro 01

Going Pro: Springfield Armory's Echelon Pro Comp

Springfield Armory has expanded its Echelon line of handguns with several new Echelon Pro Comp offerings, bringing a number of what the company calls "performance-oriented enhancements" to the platform.

Steel Yourselves—Metal is Back

These days, it’s safe to say that injection-molded polymer of some sort is the most prevalent material from which to construct a pistol frame, but lately, that trend seems to be reversing. Metal is back.

NRA-ILA Names National Shooting Sports Foundation Official Partner of the 2026 NRA Gun Bus Battleground Tour

This sponsorship through NSSF’s Protect Liberty PAC puts the firearms industry trade association on the road through Election Day.

Ori-gun-i: The ZEV Technologies FDP Carbine

The American art of folding polymer and steel into a working firearm reaches what might be its zenith with the Zev Technologies/Magpul FDP.

Study Finds Correlation Between Firearm Training & Safe Gun Storage

In a survey of more than 1,000 firearm owners across the nation, researchers found that firearm training increases responsible gun storage at a dramatic rate.

The Armed Citizen® Oct. 12, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.