{"title":"ACSS Reticle Sights","description":"\u003cp\u003eACSS reticle optics pair Holosun red and green dots with the Primary Arms ACSS Vulcan reticle, combining a fast outer ring with a precise centre dot for quick, accurate aiming. Browse ACSS-equipped pistol optics.\u003c\/p\u003e\u003cp\u003eNot sure which reticle suits you? Read \u003ca href=\"\/blogs\/news\/what-moa-means-red-dot-sight\"\u003ewhat MOA means\u003c\/a\u003e, then shop more \u003ca href=\"\/collections\/pistol-dot-sights\"\u003epistol optics\u003c\/a\u003e or the full \u003ca href=\"\/collections\/holosun-optics\"\u003eHolosun range\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"holosun-he507c-x2-green-dot-sight-acss-vulcan-reticle-solar-failsafe-he507c-gr-x2-acss","title":"Holosun HE507C X2 Green Dot Sight ACSS Vulcan Reticle Solar Failsafe – HE507C-GR-X2-ACSS","description":"\u003cp\u003eInstead of a menu of dots and circles, this \u003cstrong\u003eHolosun HE507C-X2 Green Dot Sight\u003c\/strong\u003e carries the \u003cstrong\u003eACSS Vulcan reticle\u003c\/strong\u003e — a Primary Arms design built around a large green circle with a chevron at its centre. The open circle pulls your eye to the aiming point up close, while the chevron tip is the fine hold for distance, with range references built into the reticle itself.\u003c\/p\u003e\n\u003ch3\u003eHow It Compares\u003c\/h3\u003e\n\u003cp\u003eIf you would rather switch reticles yourself, the \u003ca href=\"\/products\/holosun-he507c-x2-green-dot-sight-multi-reticle-system-solar-failsafe-he507c-gr-x2\"\u003eHE507C-X2 MRS\u003c\/a\u003e is the standard version. The same ACSS reticle with a red emitter is the \u003ca href=\"\/products\/holosun-hs507c-x2-red-dot-sight-acss-vulcan-reticle-solar-failsafe-hs507c-x2-acss\"\u003eHS507C-X2 ACSS\u003c\/a\u003e. Browse the rest of our \u003ca href=\"\/collections\/green-dot-sights\"\u003egreen optics\u003c\/a\u003e and \u003ca href=\"\/collections\/pistol-dot-sights\"\u003epistol dot sights\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptics-ready pistols cut for the RMR footprint\u003c\/li\u003e\n\u003cli\u003eShooters who want ranging built into the reticle\u003c\/li\u003e\n\u003cli\u003eDefensive and range work across mixed distances\u003c\/li\u003e\n\u003cli\u003eThose who pick a green emitter up faster\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eACSS Vulcan reticle — green circle with a centre chevron\u003c\/li\u003e\n\u003cli\u003eSolar Failsafe — a solar panel backs up the battery\u003c\/li\u003e\n\u003cli\u003eShake Awake motion activation\u003c\/li\u003e\n\u003cli\u003eSide-loading CR1632; up to 50,000 hours\u003c\/li\u003e\n\u003cli\u003e7075-T6 aluminium, IP67; RMR footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU \/ MPN \/ UPC:\u003c\/strong\u003e SKU HE507C-GR-X2-ACSS \/ MPN HE507C-GR-X2-ACSS \/ UPC 810047071365\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReticle:\u003c\/strong\u003e ACSS Vulcan (green 10 MOA centre chevron with a deactivatable 250 MOA outer circle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 1x, parallax-free, unlimited eye relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing window:\u003c\/strong\u003e 0.63 × 0.91 in (16 × 23 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmitter:\u003c\/strong\u003e Green Super LED\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindage \/ elevation per click:\u003c\/strong\u003e 1 MOA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal adjustment travel:\u003c\/strong\u003e ±50 MOA (windage \u0026amp; elevation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Solar Failsafe + side-loading CR1632, Shake Awake, up to 50,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e 7075-T6 aluminium, IP67\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e Trijicon RMR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHolosun HE507C-X2 green dot sight (ACSS Vulcan)\u003c\/li\u003e\n\u003cli\u003eMounting hardware and tool\u003c\/li\u003e\n\u003cli\u003eCR1632 battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the ACSS Vulcan?\u003c\/strong\u003e\u003cbr\u003eA Primary Arms reticle: a large circle with a centre chevron and built-in range references — fast up close, precise further out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVulcan or the Multi-Reticle System?\u003c\/strong\u003e\u003cbr\u003eThe Multi-Reticle System lets you change reticle to suit the shot. The Vulcan gives you one reticle that does both jobs at once, with nothing to select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich slides take it?\u003c\/strong\u003e\u003cbr\u003eThose cut for the Trijicon RMR footprint — check yours in our \u003ca href=\"\/blogs\/news\/red-dot-sight-footprints-explained\"\u003efootprints guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the chevron easy to use at speed?\u003c\/strong\u003e\u003cbr\u003eUp close you can shoot the circle as a whole; the chevron tip is there when the shot needs more care.\u003c\/p\u003e\n\u003ch3\u003eWhy buy from Red Dot Sight UK\u003c\/h3\u003e\n\u003cp\u003eA UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.\u003c\/p\u003e","brand":"Holosun","offers":[{"title":"Default Title","offer_id":57965834076424,"sku":"HE507C-GR-X2-ACSS","price":399.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7777\/2808\/files\/holosun-he507c-x2-green-dot-sight-acss-vulcan-reticle-solar-failsafe-he507c-gr-x2-acss-green-dot-sight-holosun-513386.jpg?v=1780982377"},{"product_id":"holosun-he507k-x2-green-dot-sight-acss-vulcan-reticle-he507k-gr-x2-acss","title":"Holosun HE507K X2 Green Dot Sight ACSS Vulcan Reticle – HE507K-GR-X2-ACSS","description":"\u003cp\u003e\u003cstrong\u003eHolosun HE507K-X2 Green Dot Sight\u003c\/strong\u003e is the ACSS Vulcan build of the subcompact K-series, with a green emitter. The Primary Arms ACSS Vulcan reticle normally turns up on far larger optics; here it fits a 0.58 × 0.77 in window on the Holosun K footprint, the modified Shield RMSc cut that slim carry slides use.\u003c\/p\u003e\n\u003ch3\u003eHow It Compares\u003c\/h3\u003e\n\u003cp\u003eFor the plain Multi-Reticle System instead, see the \u003ca href=\"\/products\/holosun-he507k-x2-green-dot-sight-multi-reticle-system-he507k-gr-x2\"\u003eHE507K-X2 MRS\u003c\/a\u003e. The same ACSS reticle with a red emitter is the \u003ca href=\"\/products\/holosun-hs507k-x2-red-dot-sight-acss-vulcan-reticle-hs507k-x2-acss\"\u003eHS507K-X2 ACSS\u003c\/a\u003e. There is more to compare in \u003ca href=\"\/collections\/green-dot-sights\"\u003egreen optics\u003c\/a\u003e and \u003ca href=\"\/collections\/pistol-dot-sights\"\u003epistol dot sights\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGlock 43X\/48, and other slim K-cut carry slides\u003c\/li\u003e\n\u003cli\u003eEveryday carry where size matters more than window area\u003c\/li\u003e\n\u003cli\u003eShooters who read a green reticle quicker\u003c\/li\u003e\n\u003cli\u003eAnyone wanting ACSS on a subcompact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eACSS Vulcan reticle in green\u003c\/li\u003e\n\u003cli\u003e12 brightness settings: 10 daylight plus 2 night-vision\u003c\/li\u003e\n\u003cli\u003eShake Awake motion activation\u003c\/li\u003e\n\u003cli\u003e1 MOA clicks; ±30 MOA of windage and elevation travel\u003c\/li\u003e\n\u003cli\u003eSide-loading CR1632, up to 50,000 hours\u003c\/li\u003e\n\u003cli\u003e7075 aluminium housing; Holosun K footprint (modified Shield RMSc)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU \/ MPN \/ UPC:\u003c\/strong\u003e SKU HE507K-GR-X2-ACSS \/ MPN HE507K-GR-X2-ACSS \/ UPC 810047072409\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReticle:\u003c\/strong\u003e ACSS Vulcan Dot: 3 MOA green centre dot with 230 MOA outer circle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 1x, parallax-free, unlimited eye relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing window:\u003c\/strong\u003e 0.58 × 0.77 in (15 × 20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrightness settings:\u003c\/strong\u003e 12 (10 daylight + 2 night-vision), Shake Awake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindage \/ elevation per click:\u003c\/strong\u003e 1 MOA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal adjustment travel:\u003c\/strong\u003e ±30 MOA (windage \u0026amp; elevation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 1 × CR1632, side-loading, up to 50,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e 7075 aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e Holosun K (modified Shield RMSc)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHolosun HE507K-X2 green dot sight with ACSS Vulcan reticle\u003c\/li\u003e\n\u003cli\u003eMounting hardware and fitting tool\u003c\/li\u003e\n\u003cli\u003eCR1632 battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich slides take the Holosun K footprint?\u003c\/strong\u003e\u003cbr\u003eIt is a modified Shield RMSc pattern, the cut used by slim subcompacts such as the Glock 43X\/48, among others. Our \u003ca href=\"\/blogs\/news\/red-dot-sight-footprints-explained\"\u003efootprints guide\u003c\/a\u003e walks through the common patterns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eACSS Vulcan or the Multi-Reticle System?\u003c\/strong\u003e\u003cbr\u003eThe Multi-Reticle version lets you cycle reticles with a button. This one is fixed on the Primary Arms ACSS Vulcan design instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it with night vision?\u003c\/strong\u003e\u003cbr\u003eYes. Two of the 12 brightness settings are night-vision levels, with 10 daylight settings above them.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much adjustment is there?\u003c\/strong\u003e\u003cbr\u003eWindage and elevation move in 1 MOA clicks, with ±30 MOA of travel each way.\u003c\/p\u003e\n\u003ch3\u003eWhy buy from Red Dot Sight UK\u003c\/h3\u003e\n\u003cp\u003eA UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.\u003c\/p\u003e","brand":"Holosun","offers":[{"title":"Default Title","offer_id":57965835682056,"sku":"HE507K-GR-X2-ACSS","price":379.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7777\/2808\/files\/holosun-he507k-x2-green-dot-sight-acss-vulcan-reticle-he507k-gr-x2-acss-green-dot-sight-holosun-507529.jpg?v=1780982492"},{"product_id":"holosun-hs507c-x2-red-dot-sight-acss-vulcan-reticle-solar-failsafe-hs507c-x2-acss","title":"Holosun HS507C X2 Red Dot Sight ACSS Vulcan Reticle Solar Failsafe – HS507C-X2-ACSS","description":"\u003cp\u003e\u003cstrong\u003eHolosun HS507C-X2 Red Dot Sight\u003c\/strong\u003e swaps Holosun's usual reticle menu for the Primary Arms ACSS Vulcan: a red 10 MOA chevron with a 250 MOA outer circle you can switch off. The chevron tip is a far finer aiming point than a 10 MOA dot would be, while the big circle is what your eye finds first at speed. Solar Failsafe sits on top, backing the CR1632 with light.\u003c\/p\u003e\n\u003ch3\u003eHow It Compares\u003c\/h3\u003e\n\u003cp\u003eThe switchable Multi-Reticle version is the \u003ca href=\"\/products\/holosun-hs507c-x2-red-dot-sight-multi-reticle-system-solar-failsafe-hs507c-x2\"\u003eHS507C-X2 MRS\u003c\/a\u003e, and the same ACSS reticle in green is the \u003ca href=\"\/products\/holosun-he507c-x2-green-dot-sight-acss-vulcan-reticle-solar-failsafe-he507c-gr-x2-acss\"\u003eHE507C-X2 ACSS\u003c\/a\u003e. If you are still narrowing the field, read our \u003ca href=\"\/blogs\/news\/best-pistol-red-dot-sights-uk\"\u003epistol red dot picks\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRMR-cut slides on full-size and compact pistols\u003c\/li\u003e\n\u003cli\u003eShooters who want a precise tip rather than a dot\u003c\/li\u003e\n\u003cli\u003eRange days followed by defensive carry\u003c\/li\u003e\n\u003cli\u003eAnyone moving up from a plain single dot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eACSS Vulcan reticle: red 10 MOA centre chevron with a 250 MOA outer circle that can be switched off\u003c\/li\u003e\n\u003cli\u003eSolar Failsafe, so daylight backs up the battery\u003c\/li\u003e\n\u003cli\u003eShake Awake motion activation\u003c\/li\u003e\n\u003cli\u003e0.63 × 0.91 in window\u003c\/li\u003e\n\u003cli\u003e1 MOA clicks; ±50 MOA of travel\u003c\/li\u003e\n\u003cli\u003eSide-loading CR1632, up to 20,000 hours\u003c\/li\u003e\n\u003cli\u003e7075-T6 aluminium, IP67; Trijicon RMR footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU \/ MPN \/ UPC:\u003c\/strong\u003e SKU HS507C-X2-ACSS \/ MPN HS507C-X2-ACSS \/ UPC 810047071143\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReticle:\u003c\/strong\u003e ACSS Vulcan (red 10 MOA centre chevron with a deactivatable 250 MOA outer circle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 1x, parallax-free, unlimited eye relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing window:\u003c\/strong\u003e 0.63 × 0.91 in (16 × 23 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmitter:\u003c\/strong\u003e 650 nm red Super LED\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindage \/ elevation per click:\u003c\/strong\u003e 1 MOA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal adjustment travel:\u003c\/strong\u003e ±50 MOA (windage \u0026amp; elevation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Solar Failsafe + side-loading CR1632, Shake Awake, up to 20,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e 7075-T6 aluminium, IP67\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e Trijicon RMR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHolosun HS507C-X2 red dot sight with ACSS Vulcan reticle\u003c\/li\u003e\n\u003cli\u003eMounting hardware and fitting tool\u003c\/li\u003e\n\u003cli\u003eCR1632 battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy a chevron instead of a dot?\u003c\/strong\u003e\u003cbr\u003eThe 10 MOA chevron is easy to see, but you aim with its tip, so it does not cover the target the way a 10 MOA dot would.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I turn the circle off?\u003c\/strong\u003e\u003cbr\u003eYes. The 250 MOA outer circle is deactivatable, leaving the chevron on its own.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Solar Failsafe actually do?\u003c\/strong\u003e\u003cbr\u003eA solar panel supplements the side-loading CR1632, which is rated up to 20,000 hours in this sight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit my slide?\u003c\/strong\u003e\u003cbr\u003eIt uses the Trijicon RMR footprint. Check your cut against our \u003ca href=\"\/blogs\/news\/red-dot-sight-footprints-explained\"\u003efootprints guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhy buy from Red Dot Sight UK\u003c\/h3\u003e\n\u003cp\u003eA UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.\u003c\/p\u003e","brand":"Holosun","offers":[{"title":"Default Title","offer_id":57965836632328,"sku":"HS507C-X2-ACSS","price":379.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7777\/2808\/files\/holosun-hs507c-x2-red-dot-sight-acss-vulcan-reticle-solar-failsafe-hs507c-x2-acss-red-dot-sight-holosun-537088.jpg?v=1780979873"},{"product_id":"holosun-hs507k-x2-red-dot-sight-acss-vulcan-reticle-hs507k-x2-acss","title":"Holosun HS507K X2 Red Dot Sight ACSS Vulcan Reticle – HS507K-X2-ACSS","description":"\u003cp\u003e\u003cstrong\u003eHolosun HS507K-X2 Red Dot Sight\u003c\/strong\u003e takes the ACSS Vulcan reticle down to carry size: a red 3 MOA dot inside a 230 MOA circle, on a 0.58 × 0.77 in window. The circle is the part your eye catches when the pistol comes up close in; the 3 MOA dot is what you use once there is time to aim properly.\u003c\/p\u003e\n\u003ch3\u003eHow It Compares\u003c\/h3\u003e\n\u003cp\u003ePrefer the button-switchable reticles? That is the \u003ca href=\"\/products\/holosun-hs507k-x2-red-dot-sight-multi-reticle-system-hs507k-x2\"\u003eHS507K-X2 MRS\u003c\/a\u003e. The green-emitter ACSS is the \u003ca href=\"\/products\/holosun-he507k-x2-green-dot-sight-acss-vulcan-reticle-he507k-gr-x2-acss\"\u003eHE507K-X2 ACSS\u003c\/a\u003e. Our \u003ca href=\"\/blogs\/news\/best-pistol-red-dot-sights-uk\"\u003epistol red dot picks\u003c\/a\u003e put the options side by side.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGlock 43X\/48, and other K-cut subcompacts\u003c\/li\u003e\n\u003cli\u003eConcealed carry where bulk is the limiting factor\u003c\/li\u003e\n\u003cli\u003eShooters who want a circle-dot without a reticle menu\u003c\/li\u003e\n\u003cli\u003eA step up from a plain carry dot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eACSS Vulcan reticle: red 3 MOA dot inside a 230 MOA circle\u003c\/li\u003e\n\u003cli\u003e0.58 × 0.77 in window in a subcompact body\u003c\/li\u003e\n\u003cli\u003e12 brightness settings: 10 daylight plus 2 night-vision\u003c\/li\u003e\n\u003cli\u003eShake Awake motion activation\u003c\/li\u003e\n\u003cli\u003e1 MOA clicks; ±30 MOA of travel\u003c\/li\u003e\n\u003cli\u003eSide-loading CR1632, up to 40,000 hours\u003c\/li\u003e\n\u003cli\u003e7075 aluminium; Holosun K footprint (modified Shield RMSc)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU \/ MPN \/ UPC:\u003c\/strong\u003e SKU HS507K-X2-ACSS \/ MPN HS507K-X2-ACSS \/ UPC 810047072393\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReticle:\u003c\/strong\u003e ACSS Vulcan (red 3 MOA centre dot with a 230 MOA outer circle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 1x, parallax-free, unlimited eye relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing window:\u003c\/strong\u003e 0.58 × 0.77 in (15 × 20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrightness settings:\u003c\/strong\u003e 12 (10 daylight + 2 night-vision), Shake Awake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindage \/ elevation per click:\u003c\/strong\u003e 1 MOA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal adjustment travel:\u003c\/strong\u003e ±30 MOA (windage \u0026amp; elevation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 1 × CR1632, side-loading, up to 40,000 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e 7075 aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e Holosun K (modified Shield RMSc)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHolosun HS507K-X2 red dot sight with ACSS Vulcan reticle\u003c\/li\u003e\n\u003cli\u003eMounting hardware and fitting tool\u003c\/li\u003e\n\u003cli\u003eCR1632 battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the circle-dot help?\u003c\/strong\u003e\u003cbr\u003eThe 230 MOA circle is large enough to catch your eye during the draw, and the 3 MOA dot inside it stays fine enough for a deliberate shot.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cut does it need?\u003c\/strong\u003e\u003cbr\u003eThe Holosun K footprint, a modified Shield RMSc pattern. See our \u003ca href=\"\/blogs\/news\/red-dot-sight-footprints-explained\"\u003efootprints guide\u003c\/a\u003e if you are unsure what your slide is cut for.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the battery last?\u003c\/strong\u003e\u003cbr\u003eThe side-loading CR1632 is rated up to 40,000 hours here, and Shake Awake shuts the dot down when the pistol is still.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it night-vision usable?\u003c\/strong\u003e\u003cbr\u003eTwo of the 12 settings are night-vision levels; the other 10 are daylight brightnesses.\u003c\/p\u003e\n\u003ch3\u003eWhy buy from Red Dot Sight UK\u003c\/h3\u003e\n\u003cp\u003eA UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.\u003c\/p\u003e","brand":"Holosun","offers":[{"title":"Default Title","offer_id":57965836697864,"sku":"HS507K-X2-ACSS","price":399.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7777\/2808\/files\/holosun-hs507k-x2-red-dot-sight-acss-vulcan-reticle-hs507k-x2-acss-red-dot-sight-holosun-557603.jpg?v=1780982342"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/7777\/2808\/collections\/hf_20260726_231455_7aa192d4-796e-44de-8582-1d100d88684e.png?v=1785107843","url":"https:\/\/reddotsight.co.uk\/collections\/acss-reticle-sights.oembed","provider":"Red Dot Sight UK","version":"1.0","type":"link"}