The Swampfox Kingslayer Micro Reflex Sight with a red circle dot reticle (Swampfox part no. OKS00122RC) is a super compact open reflex optic built to give shooters a fast, both-eyes-open sight picture on pistols, rifles, and shotguns alike. Swampfox Optics designed the Kingslayer around an RMR-compatible footprint, so removing the included 1913 Picatinny mount exposes a direct-mount platform for pistol slides, while leaving the mount installed opens up rifle and shotgun applications. Built like a tank, the Kingslayer holds zero on reciprocating pistol slides, 12 gauge shotguns, and even .308 battle rifles. The lens carries a scratch-resistant, anti-glare multicoating, and the housing is waterproof and fog resistant for reliable performance in any weather.

Key Specifications

• Reticle option tested here is a 3 MOA red circle dot for a fast, precise aiming reference.
• Battery life is rated at 1500 hours for extended use between changes.
• Offers 10 brightness settings to match any lighting condition.
• Runs on a single CR1632 lithium battery for power.
• Weighs only 1.3 oz, adding minimal bulk to a slide or rail.
• Uses the RMR-compatible footprint once the included Picatinny mount is removed.
• Finish is black for a low-profile appearance.
• Magnification is fixed at 1x for true both-eyes-open shooting.
• Eye relief is unlimited, so head position does not affect the sight picture.

Frequently Asked Questions

Can this optic mount directly to a pistol slide? Yes, removing the included 1913 Picatinny mount exposes the RMR-compatible footprint underneath for direct pistol slide mounting.

Will it hold zero on a shotgun or .308 rifle? Yes, Swampfox built the Kingslayer to maintain zero on reciprocating pistol slides, 12 gauge shotguns, and .308 battle rifles.

What battery does it use? It runs on a single CR1632 lithium battery, rated for up to 1500 hours of use.

Buy the Swampfox Kingslayer Micro Reflex Sight

Add a durable, multi-platform red dot that keeps up with pistol, rifle, or shotgun use. Order this Swamp Fox optic from our red dot sights selection, with fast, insured shipping from our Lubbock, Texas gun shop.