Springfield Echelon 4.0C COA Review: Aimpoint's Tank Optic
Springfield Echelon 4.0C COA Review: Aimpoint's Tank Optic. GoldenWebb tests the Springfield Echelon 4.0C with Aimpoint's COA optic—a closed-emitter game-changer for duty and concealed carry pistols. { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://greyhive.com#organization", "name": "Greyhive", "url": "https://greyhive.com", "description": "Greyhive is a censorship-resistant video platform for the firearms, 2A, hunting, and outdoor industries — where creators build, review, and monetize unfiltered content.", "logo": { "@type": "ImageObject", "url": "https://greyhive.com/static/uploads/images/ae198483-01c9-44b4-a16a-03f516ceaf66.svg", "width": 512, "height": 512 }, "sameAs": [ "https://x.com/greyhive", "https://www.instagram.com/greyhive/", "https://www.youtube.com/@Greyhive", "https://www.linkedin.com/company/greyhive/" ] }, { "@type": "WebSite", "@id": "https://greyhive.com#website", "url": "https://greyhive.com", "name": "Greyhive", "description": "Greyhive is a censorship-resistant video platform for the firearms, 2A, hunting, and outdoor industries — where creators build, review, and monetize unfiltered content.", "publisher": { "@id": "https://greyhive.com#organization" } }, { "@type": "Person", "@id": "https://greyhive.com/c/goldenwebb#person", "name": "GoldenWebb", "url": "https://greyhive.com/c/goldenwebb", "description": "GoldenWebb is a Greyhive creator producing original 2A, firearms, hunting, and outdoor content.", "image": "https://greyhive.com/lazy-static/avatars/ebac2648-9bc7-4881-a233-58446fddaf73.jpg" }, { "@type": "Article", "@id": "https://greyhive.com/blog/springfield-echelon-4-0c-coa-review#article", "isPartOf": { "@id": "https://greyhive.com#website" }, "mainEntityOfPage": { "@id": "https://greyhive.com/blog/springfield-echelon-4-0c-coa-review" }, "url": "https://greyhive.com/blog/springfield-echelon-4-0c-coa-review", "headline": "Springfield Echelon 4.0C COA Review: Aimpoint's Tank Optic", "name": "Springfield Echelon 4.0C COA Review: Aimpoint's Tank Optic", "description": "GoldenWebb tests the Springfield Echelon 4.0C with Aimpoint's COA optic—a closed-emitter game-changer for duty and concealed carry pistols.", "articleSection": "Gun Reviews", "articleBody": "The Springfield Echelon 4.0C COA is a 9mm compact duty pistol that pairs Springfield's modular Echelon platform with Aimpoint's closed-emitter COA red dot optic — and according to GoldenWebb's hands-on range review, it's one of the most durable factory optics-ready pistols on the market right now. The 4.0C designation marks this as the compact variant: 4-inch barrel, 15+1 magazine capacity, and a footprint that mirrors a Glock 19. In his Greyhive review, GoldenWebb breaks down what makes the Aimpoint COA cut on the Echelon a meaningful release. Until now, COA-equipped pistols were essentially Glock-only, with most of that initial supply absorbed by military and law enforcement contracts. Springfield winning a COA contract opens the door for civilian shooters who prefer the Echelon's grip module and trigger over a Glock. This review covers the optic's durability claims, the unusually large viewing window, factory iron-sight co-witness, the proprietary footprint trade-off, and how the 4.0C handles at the 25-yard line. Key Takeaways The Springfield Echelon 4.0C is a 9mm compact pistol with a 4-inch barrel and 15+1 capacity — same overall footprint as a Glock 19. Aimpoint's COA was previously exclusive to Glock; Springfield is the second manufacturer to land a factory COA contract. The COA is a closed-emitter optic milled deep into the slide for maximum point-of-impact retention under abuse. Compared to the Aimpoi…