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Holosun  |  SKU: HE507K-GR-X2

Holosun 507K Green X2, 32 MOA Ring & 2 MOA Green Dot, K Series Footprint (Modified RMSc), MRS Reticle Side Battery - HE507K-GR-X2

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$319.99

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Description


The Holosun 507K X2 Green is a micro pistol green dot sight from Holosun with an M.R.S. (multi reticle system) and a modified RMSc footprint a.k.a. K Series footprint. The MRS reticle gives you a 32 MOA outer ring, and a 2 MOA center dot. The larger outer ring makes “finding the dot” a bit easier, and the 2 MOA dot make precision shots easier to achieve.

This micro pistol optic is designed to fit smaller handguns such as micro compact and subcompact pistols. It will fit on a K series slide directly (like on the Sig P365) but will require an adapter plate to fit on RMSc slides (like the Glock 43X MOS).

The MRS reticle is also configurable, allowing you to use just the 32 MOA circle, or just the 2 MOA dot if you please.

This durable red dot sight is one of the most popular red dot sights Holosun produces. It features a 7075 T6 Aluminum housing, sleek low profile design, side removable battery, shake awake, manual brightness mode, IP67 waterproof rating, 2 nightvision modes, and long battery life ranging from 20,000 to 50,000 hours depending on the reticle and brightness level.

This optic has a green reticle. Green has a few benefits:

  • Green reticles are less straining for the eye to see.
  • Green reticles can help with astigmatism. If you have astigmatism you will see a blurry dot, we have been told by a few customers that Green dots help with their astigmatism, making the dot look more crisp than the red version.
  • Green will not washout on backdrops like green grass, foliage, or green colors.
  • In theory Green dots can have a longer battery life because Green is brighter, so for example a green dot on brightness setting 6 may be the same brightness as a red dot on setting 7 - which would save battery life.

If you want to learn more check out our full article about Red vs Green Dot Pros & Cons here.

Holosun 507K X2 Green Reticle 

Specifications

Holosun 507K X2 Green Specifications

Physical Specifications

  • Footprint: Modified RMSc a.k.a K Series
  • Recommended Applications: Micro & Subcompact Pistols
  • Housing Material: 7075 T6 Aluminum
  • Window Size (in): 0.58Hx0.77W
  • Deck Height: 7mm
  • Dimensions (in): 1.6Lx0.98Wx0.95H
  • Housing Finish: Anodize
  • Housing Color: Black
  • Weight: 1oz
  • Magnification: 1x
  • Parallax: None
  • Eye Relief: Unlimited
  • Multi Coated Lens: Yes
  • Submersion Waterproof Rating: IP67
  • Vibration: 5000G
  • Storage Temperature: -40℃~70℃
  • Working Temperature: -30℃~60℃

Included in the Box

  • Picatinny Mount Included: no
  • Screws Included: M4x12, M3x12
  • Cover Included: no
  • Lens Cloth: yes
  • Multi Tool: yes
  • Manual: yes
  • Warranty Card: yes

Reticle Specifications

  • Reticle Size: 32 MOA Outer Ring, 2 MOA Center Dot
  • Reticle Color: Green
  • Adjustment Per Click: 1 MOA
  • W&E Travel Range: ±30 MOA

Electronic Specifications

  • Solar Failsafe: No
  • Auto Turn On: Yes
  • Auto Turn Off: Yes
  • Manual Brightness: Yes
  • Automatic Brightness: No
  • Brightness Settings: 10 Daylight, 2 Nightvision
  • Lockout Mode: Yes

Battery Specifications

  • Battery Type: CR1632
  • Battery Life: 20,000 Hours (Ring + Dot) 50,000 Hours (Dot Only) (Both Setting 6)
  • Removable Battery: Yes
  • Battery Location: Side of Housing

Product Specifications

  • Manufacturer: Holosun
  • Manufacturer Part Number: HE507K-GR X2
  • UPC: 810047071389
  • Country of Origin: China

Freedom Gorilla Staff Review

The 507K-GR is an awesome site designed for concealed carry. Multi reticle system is a really cool feature that lets you use them both together or toggle through just a 32 MOA circle only or a 2 MOA dot only. The concept behind the 32 MOA circle is so you can easily find it better when drawing the gun. It even has rear dovetails to act as rear irons sights.

The Holosun 507k is a micro compact reflex site made for sub compact pistols. It is the premium top of the line micro reflex sight holosun makes. It is a step above the 407k. It competes with the RMRcc, etc, etc.

It has an open emitter, aluminum housing, comes in red or green dot versions, and weights 1 oz.

The 507K-GR has many of Holosun’s features such as shake awake, multi reticle system, long battery life, glass, etc.

It has 2 nightvision modes and 10 daylight modes.

The only thing this site doesn’t have is solar charging, and auto brightness settings, which the 507c does.

The battery will last 50,000 hours on setting 6 with the dot only reticle. With the circle dot plus dot it will last 10k-25k hours depending on brightness settings. Should be around 20k hours on setting 6.

It accepts a CR1632 battery which is conveniently located in a side tray which means you don’t have to remove the sight and risk losing zero when changing the battery.

The MRS system is holosuns multi reticle system. It lets you choose from 3 dots, a 32 MOA + 2 MOA dot, 2 MOA dot only, or 32 MOA dot.

Some of the benefits of the 32 MOA dot + 2 MOA dot are that it’s easier to pick up upon drawing

The size of the 507k is just under 1 inch wide, 1 inch tall, and 1.6 inches in length, the actual size is 1.6x0.98x0.95. The window size is 0.58x0.77 inches.

The 507K-GR is made out of aircraft grade 7075 T6 aluminum and is very durable, waterproof IP67 is certified tested to be 100% protected against solid objects like dust and sand and has been tested to work for at least 30 minutes under 6 inches to 3.3ft of water, and can withstand drop tests.

The 507K-GR comes with a manual, cleaning cloth, two set of screws with blue Loctite already applied, and an adjustment tool for the turrets so you can change the elevation and windage as needed. Each adjustment click has a value of approximately 1 MOA or 1 inch at 100 yards (1/2" at 50y; 1/4" at 25y). When zeroing at 25 yard, if your impacts are 2 inches low and 1 inch right, you will need to adjust Elevation 8 clicks UP(counterclockwise) and 4 clicks LEFT (clockwise). The maximum adjustment range is ±30MOA.

You can get the 507k in both red or green dot versions. If you are unsure of choosing red or green, green is a little bit brighter and easier for the eye to pick up. To learn more of the science see our guide on choosing red vs green dot here.

Fitting Guide

Holosun 507K X2 Green Dot Fitment Information

Below is information on mounting the Holosun 507K X2 Green Dot Sight on different pistols. Some pistols require adapter plates to make it fit. The table below is for Optics Ready pistols only. If you do not have an optics ready pistol and still want to mount a 507K X2 to your platform, you can get a dovetail mount which replaces your rear dovetail sights. Find all our dovetail mounts here.

*Note: Clicking on the pistol name below will take your to our fitment guide which explains more about each platform.

Direct Fit For These Optics Ready Guns

Adapter Plate Required For These Optics Ready Guns

Don't see your model listed? Check out our Fitment Guides Here.


This is a direct fit for the following models:
  • Sig P322, 365X, 365XL, 365X-Macro, 365-380
  • S&W M&P 5.7 (needs these screws)
  • S&W Equalizer (needs these screws)
  • Canik TP9 Elite SC
  • Bul Armory SAS II Ultralight 
  • Mossberg 940 Tactical (Shotgun)
  • Taurus TX22 Compact
  • Taurus GX4, GX4 XL T.O.R.O
  • FN Reflex MRD

*To mount this on other pistols such as Glocks and Springfield's you will need to get an adapter plate or an optics cut slide.

Warranty

Effective January 1, 2022:

Commercial Warranty Information:

Your Holosun product is warranted to be free of defects in materials and workmanship upon registration of the product for the lifetime of the product. This warranty specifically applies to the metal structure, optical and illumination systems. The metal structure/housing and optical system (glass) of your Holosun product is warrantied for the life of the product under normal, personal use. Under the Holosun Warranty, the illumination system (LED), is warrantied for 10 years from the manufacture date under normal, personal use. In the event of a confirmed defect under this warranty, we will, at our option, repair or replace the product with a Holosun product of similar type/function, and of equal or greater value. Holosun reserves the right to make substitutions for similar product/s if the warrantied model in question is no longer in production. This Holosun Warranty does not apply to: (a) asserted defects caused by normal wear and tear of any part including knobs, finish, etc.; (b) asserted defects caused by modification including; aftermarket finishes, unauthorized service, improper maintenance, acts of Nature; and (c) asserted defects involving subjective personal likes or judgments. Also, this warranty is null and void if modification or maintenance is provided by someone other than Holosun. Holosun may restrict warranty service for our products to the country from which Holosun or its authorized dealers originally sold the Holosun product. For warranty claims outside the United States, the costs of shipping or transporting the product (including to and from Holosun or our dealer), any insurance or any fees, duties and taxes are the sole responsibility of the purchaser and will not be covered by this warranty.

For customers inside of the United States seeking warranty service, please email info@holosun.com

Key Features
  • K Series Footprint: Confirm Pistol Fitment Here
  • 7075 T6 Aluminum Housing
  • MRS Reticle: 32 MOA Outer Ring, 2 MOA Center Dot
  • Up to 20K Hrs Battery Life (MRS Reticle), 50KHrs (2 MOA Dot Only) (Setting 6)
  • 12 Brightness Setting: 10 DL & 2 NV Compatible
  • Manual Brightness
  • Convenient Tray Battery Compartment
  • Parallax-free & Unlimited Eye Relief
  • Designed for Subcompact & Micro Compact Pistols
  • IP67 Waterproof
  • Shake Awake
  • Multilayer Reflective Glass

There is no sales tax, unless you live in GA/IL/IN/MI/NJ/NC/OH/PA/VA/MD/NV/AZ/KY/UT/FL/MN/TN/WA/AR/CO/CA

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Customer Reviews

Based on 210 reviews
93%
(196)
5%
(10)
1%
(3)
0%
(1)
0%
(0)
D
Dale Young
Great Service and Fast Shipping

I couldn’t be happier with my new reticle. I am also pleased with Freedom Gorilla’s customer service and their commitment to shipping items fast! I have already recommended them to others I know!!

H
Herb Winney
Green dot

Great optic for Glock 43x
Fast shipping
Will purchase more items form freedom gorilla!

K
Kiel B.
Great little optic

Great little optic for my P365X, shipping was super fast.

D
Daniel
Blown away, great service

This is my first foray into a pistol red dot: I stumbled onto Freedom Gorilla searching for a red dot for my newly acquired M&P 5.7 and found lots of info integrated into a retail site. Freedom Gorilla really helped me narrow down my search with their helpful site info.

After cross referencing a bit and more searching i found the price right on target. On top of that they had some specific info to my platform I would have been lacking, such as needing specific mounting screws which were available by request at no charge. Their customer service was great when I reached out, and they shipped it right out with everything needed arriving on time thanks to the info available. So huge hit in the hassle free dept.

Hours after arrival I received delivery confirmation an email with more helpful links on mounting, sighting, and general operation of the sight came in. Who needs to read tiny directions with that kind of service?

As for the sight itself, first impressions are good but I don't count myself a reputable source with such little experience:

It's clear, brightness adjustable, well fitting on my platform, and appears sturdy.

Time and training will have to be the ultimate judge on how I like it v.s. iron sights on a pistol but first impressions make me think I've made all the right decisions.

At the end of the day, I can highly endorse Freedom Gorilla with this experience and will recommend them to friends/family, I can only hope to enjoy the product as much as the purchase experience.

S
Sam Holleman
Freedom Gorilla's website made this seemless

The website was incredibly informative. This helped me make a decision for what I wanted, especially because I had a handgun that is not a well known brand. The optic I received is working great!

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Frequently Asked Questions

How do you change reticles?

Hold the "-" button down 3 seconds to switch between the three reticles (Circle +Dot, Dot and Circle) in that order.

How do you zero in the dot?

The sight has been factory zeroed to approximately 25yards and should require minimal adjustment to achieve zero. To adjust, use the provided turret adjustment tool, each click is 1 MOA. Elevation is at the top and windage is on the side.

Does it remember my brightness setting?

Yes the 507K-GR will turn on to your last brightness setting used.

What is the footprint the 507K-GR uses?

Holosun 507K-GR is compatible with Shield RMSc/RMS/RMSw/SMS, Sig Romeo Zero Optics

When installing, what should I tighten the screws to?

Tighten the screws to 15 inch/lbs using screws with a non-permanent thread locker, like blue Loctite.

How do you turn the 507K-GR on?

You press and release either brightness button to turn on the sight (“+” or “-”).

How do you turn the 507K-GR off?

Press and hold both brightness buttons simultaneously to the turn the power and motion sensor off, this will also disable the Shake Awake feature.

How do I activate Lock Mode?

Hold the “+” brightness button for 3 seconds, the LED will blink once to activate Lock Mode.

How do I turn off Lock Mode?

To turn off Lock Mode hold the “+” brightness button for 3 seconds, the LED will blink once to confirm Lock Mode is deactivated.

How can I adjust the sleep timer?

By default the sleep timer of the Shake Awake feature is set to 10 minutes. You can adjust this time by holding the “+” brightness button for 10 seconds. Press and releases either brightness button to set the time, the LED will blink 1 time for 10 minutes, 2 times for 1 hour, 3 times for 12 hours, or 4 times to disable sleep mode. Then press and hold both brightness buttons to save the time setting and power off the sight.

Why is my reticle blinking slowly?

If the battery voltage is below 2.2Vdc, the reticle will blink slowly to indicate it needs a new CR1632 battery.

How do I change the battery on the optic?

The battery tray is located on the side, simply unscrew the tray and replace using a CR1632 battery.

Does this also come in Red?

Yes