Swampfox Optics 3 Moa Dot/65 Red Circle Dot Micro Reflex Sight

The Swampfox Optics 3 MOA Dot/65 Red Circle Dot micro reflex sight is a compact open-emitter red dot built for shooters who want a fast, both-eyes-open sight picture on pistols, rifles, and shotguns alike. This micro reflex sight handles the recoil of everything from 9mm handguns to .308 rifles without losing zero, making it a no-nonsense optic for serious shooters. Its small footprint and multiple mounting options mean you get versatility without the bulk.

Out of the box, the sight includes a 1913 Picatinny rail mount for rifle and shotgun applications. If you're running it on a pistol slide, simply swap to the RMR-compatible footprint built into the optic's base—no tools needed. That dual-footprint design cuts down on redundant hardware and lets you move the sight between platforms as your needs change. The optic is fully waterproof and fog-resistant, with a scratch-resistant anti-glare lens multicoating that keeps your sight picture clean in harsh conditions.

The 3 MOA red circle dot reticle gives you a precise aiming point that's easy to pick up fast without stealing target visibility at distance. Ten brightness settings let you dial in the right glow for everything from indoor ranges to bright sunlight, and a single CR 1632 battery will keep the sight running for 1,500 hours—roughly two months of continuous use. At 1.3 ounces, weight penalty is minimal whether you're mounting it on a slide, rail, or shotgun rib.

Swampfox built this sight to take a beating. It's proven itself on carry guns, duty rifles, and magnum shotguns without compromise. If you want a micro red dot that refuses to compromise on durability or reticle choice, this is worth a hard look.

Key Features

• 3 MOA red circle dot reticle for fast target acquisition and precise aim point
• Dual-mount design: includes Picatinny rail mount plus RMR-compatible footprint for pistol slide use
• Waterproof and fog-resistant optic with scratch-resistant anti-glare lens coating
• Maintains zero on 12 gauge shotguns, .308 rifles, and high-recoil pistol platforms
• 10 brightness settings to match lighting conditions from indoor to bright sunlight
• CR 1632 lithium battery delivers 1,500 hours of battery life
• Ultralight at 1.3 ounces—minimal weight penalty on any platform

Specifications

Frequently Asked Questions

Can I use this micro reflex sight on both a pistol and a rifle?

Yes. The sight ships with a Picatinny rail mount for rifle and shotgun use. Underneath, it has an RMR-compatible footprint that accepts direct pistol slide mounts. You can swap between setups without tools, so one optic can do double duty if you're running it across multiple guns.

How long does the battery last in this red dot sight?

The CR 1632 lithium battery provides 1,500 hours of runtime, which equals roughly 2 months if the optic runs continuously. In typical use—a few hours at the range per week—a single battery will last many months.

Will this sight hold zero on a shotgun or high-recoil rifle?

Yes. Swampfox designed the Kingslayer to maintain zero on 12 gauge shotguns, .308 battle rifles, and reciprocating pistol slides without losing point of aim.

What's the reticle size and what does the 3 MOA specification mean?

The red circle dot has a 3 MOA (minute of angle) dot size. At 100 yards, 3 MOA equals roughly 3 inches—a precise aiming point that's fast to pick up while preserving sight picture on target. The circle design speeds initial acquisition compared to a simple dot.