(35) Write a Review

Product Description

The Kingslayer is a super compact, highly accurate micro reflex open red dot sight featuring three reticle options that allows for quickly acquiring a sight picture with both eyes open while focusing through to the target. For reciprocating pistol slide platforms, remove the Picatinny mount to reveal an RMR-compatible footprint underneath. For rifle or shotgun platforms, Kingslayer comes with a low profile 1913 Mil-Std Picatinny mount already installed. Kingslayer is waterproof, fog resistant and features a scratch resistant, ruby red anti-glare lens coating. Built like a tank, Kingslayer can withstand 800 g’s of impact and maintain zero come what may.





The crisp 3 MOA dot covers only three inches of target area at 100 yards distance. Kingslayer maintains its zero over time, shot after shot.



Kingslayer’s true 1x sight picture and 10 brightness settings create the opportunity for an instant, lightning fast sight picture and faster follow up shots with both eyes open.



The included CR1632 battery lasts up to 1,500 hours before being swapped out via side tray (no change in scope zero). Kingslayer shuts itself off automatically after 4 hours. 

  • ab2-text-img
  • ab2-text-img
  • ab2-text-img
ab2-img ab2-img ab2-img

.223 REM



  • 1.8"

  • 1.1"

  • 1"

  • 1oz




    State of the art lens coating fights glare and maximizes light transmission.


    No fogging between lenses, no worries about seeing the dot.    


    Tough as your old high school football coach, and ready rain or shine too. 

slide-img slide-img slide-img slide-img



MOA Adjustment


Dot Size




Lens Diameter


Illumination Positions


Brightness Adjustments

Up/Down Digital Press

Shockproof G Forces



1 Meter/ IPX7

Battery Type

CR 1632

Max Battery Life

1,500 hours


1,8”(length) * 1” (width) * 1.0”(height)/ 1.4"(height) with mount


1oz without mount/ 1.3oz with mount


Multi-Coated Ruby Red

Specialty Coatings

Anti-fog, hydrophobic, anti-scratch


Parallax free @100 yards

Eye Relief


Mount Type



Aircraft grade aluminum

Windage/Elevation Movement Range (MOA)

45 MOA/ Total 90 MOA Range


3 MOA Red Dot
Red Circle Dot
Green Circle Dot



Optic with sheath

Picatinny Rail Mount


Lens Cloth


Three screw sets

TORX #6-32x0.315L T10

TORX #6-32x0.393L T10

TORX M3.5x10L T10

Other Details

Sub Title:
Micro Reflex Red Dot (Pistol Cut) 1x22


  • 5

    Posted by Jackie on Feb 6th 2020

    I have this mounted on a KSG. I have a few hundred 2 3/4 00 buck, and around 100 slugs. Zero issues. This, and the KSG, shines with the mini shells. Easy to shoot and spot on at 50 yards in.

  • 5
    Get one

    Posted by Gary Wallace on Jan 3rd 2020

    if you don’t have one of these on your CZ Scorpion EVO you’re missing out. Perfect for the Scorpion! solid, easy to see, aligns perfect with the eye.

  • 4
    Kingslayer for budget USPSA Open build

    Posted by Rich Alloway on Dec 30th 2019

    Ever since I first heard of Swampfox Optics on the We Like Shooting podcast, I've been looking for an excuse to purchase a Kingslayer red dot optic, but didn't have a pistol to mount on one. Black Friday/Cyber Monday let me put my hands on a Springfield XDm OSP 9mm Tactical which as a threaded barrel and 3 red dot mounting plates for a great price. Swampfox's BF/CM sale locked in the deal! I used the RMR mounting plate that came with the XDm OSP to mount the Kingslayer and dry fired with it for several days before I had chance to head out to the range for some live fire. During indoor dry fire, I noticed that the dot would have a visible flicker while moving the gun on the 3rd setting down from the brightest. Using my 1000 fps highspeed camera, I found that the brightest setting did not show any flicker (100% duty cycle) and the other brightness settings had varying duty cycles; 7 frames on + 7 frames off for the 1st step down (50% duty cycle), 4 frames on, 4 frames on + 9 frames off for the 2nd step down (~30% duty cycle), etc. This is my first red dot, so I'm not sure if this is typical or not. In live fire, which I've been able to do 3 times since receiving the dot earlier this month, I've put about a thousand rounds through the pistol that this dot is mounted to and the flicker is noticeable on the 2nd and 3rd brightest setting as gaps in the dot cycle arc, if you're looking for it, but I don't think it's going to be a problem. The brightest setting does not flicker and isn't so bright that the dot blooms on an overcast day and also appears to be bright enough for even the sunniest days. I'm concerned about the battery life on the brightest setting, but will be carrying extra batteries with me when I practice or shoot a match. After zeroing the dot, I have not had to re-adjust it, even with 9mm major ammo which loosens the compensator! It seems to be holding the zero just fine. My father-in-law, whose eyesight has him thinking about putting red dots on his pistols and revolvers, has been putting off buying a red dot until he could shoot a handgun with one to see if it really would help. After putting several magazines of ammo through the XDm with the Kingslayer, he's now sold on getting one! After Christmas, I expect that he'll buy one or more Kingslayers for his own handguns. I'd have given this dot a 5-star review, except for the flicker. If all dots exhibit this, then I'd say the Kingslayer deserves the additional star. If others do not, then I think the Kingslayer designers should consider increasing the pulse frequency so the gaps in the recoil arc appear shorter (or may even disappear if the rate is high enough).

  • 5

    Posted by Rob starr on Dec 19th 2019

    Bought this for my wife’s AR 15 and she loves it . Super easy to sight in , fast target sight and light weight She is even more deadly that before . Great product .Great company.

  • 5
    Kingslayer on Glock

    Posted by James Dillard on Dec 18th 2019

    I purchased the Kingslayer to test as an alternative to the much higher priced Trijicon RMR. Upon arrival you can tell they take pride in their product, the packaging is well made and sturdy. Inside the optic and accessories are protected well by a foam insert. The Kingslayer mounted easily to my aftermarket Brownells Glock slide cut for the RMR, no wiggle room, no gap. Once mounted I test fired it to zero and the Kingslayer was already perfectly sighted in for 25 yds. The dot is bright and easy to see even in daylight. As a gunsmith who shoots a lot, I would highly recommend the Kingslayer as a red dot option for a CCW, and even competitive shooting. It’s one piece design with external battery compartment makes it a solid choice for use and a great alternative to the RMR.

  • 5

    Posted by Ryan G on Dec 17th 2019

    This little red Dot for the money is amazing. The glass is CRYSTAL clear and has held zero. I have astigmatism and the reticle is crisp! The only con is the battery life. Great job swampfox. Will definitely buy again

  • 4
    Excellent product

    Posted by Esequiel Salazar on Dec 16th 2019

    Excellent product. Shipping was fast and will definitely buy again!

  • 4
    Great Red Dot

    Posted by Colten on Dec 12th 2019

    The kingslayer should be called the RMR slayer. This red dot is sturdy, precise, insanely clear sight picture, and looks badass on any firearm you choose to attach it to! I highly recommend this for anyone looking to upgrade their weapon, you won’t be disappointed.

  • 5
    Kingslayer for Ruger MK III

    Posted by Chris F. on Dec 6th 2019

    I bought my Kingslayer for a Ruger MK III, and so far I am very happy. It was easy to mount and zero, the glass is wide and clear. I would definitely buy again.

Customers Also Viewed

Popular Trending Products

3MOA liberator red dot sight with low profile picatinny mount and anti glare ruby red lens

The Liberator is a super compact, highly accurate Point-of-Aim Red Dot Sight. A clear 1X magnificati…


Blade is the mission-driven 1x prism scope dedicated for home defense and law enforcement. Blade&rsq…

Liberty & Justice
$199.00 - $209.00

Liberty and Justice are the all new open reflex red dot sights intended for every day carry and law …

Independence Mount

The Independence Mount is a cantilever 30mm ring mount for rifle scopes using the AR-15 or other Mod…

$229.00 - $249.00

The next generation ultra-compact micro red dot sight optimized for every day carry on slimline pist…