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Holosun 507C V2 – Green means GO! Updated X2

Do you see red in your search for a red dot sight? Then how about a Holoson 507C with a green dot reticle?

Today we will review the Holosun HE507C-GR Elite 2 MOA Green Dot Sight X2.

Holosun Technologies has been putting some great optics out, and the 507C is an excellent choice for a Micro Red Dot Sight (MRDS), make that a green dot sight in this case.

Holosun HE507C-GR

V2 Updated HE507C-GR

If you still want the red dot illumination, don’t worry; this review will provide pretty much everything you need to know for the red dot variation.

We will cover a lot of ground in this Holosun 507C review, bringing you all the features, specifications, and even some customer insight. Professionals, hunters, shooters, and gun enthusiasts will find just about everything there is to know about this quality reflex sight at reddotsightreviews.com.

If you already have all the information you need and are ready to purchase, head over to Amazon for an incredible price, answers to questions, and customer reviews. Don’t forget their super fast shipping.

Click here to check out the Holosun HE507C-GR Elite X2 Green Dot Sight at Amazon.com

Holosun 507C Review

Holosun 507 Review mounted on Glock

The Holosun HE507C-GR V2 (Now the X2) Elite is a lightweight, durable MRDS that touts the trademarked Solar Failsafe technology with three reticle options in green illumination. The sight is the perfect solution for handgun owners, competition shooters, and hunters. The 507C X2 has the same footprint as the Trijicon RMR and is an excellent choice for handgun applications.

Holosun Technologies has gained popularity in recent years as a manufacturer of quality shooting optics at a reasonable price point. The 507C X2 red dot sight is a shining example of what you can expect from the Holosun family of shooting optics.

Bottom Line Up Front

With the Holosun HE507C-GR X2 green dot sight, you get innovative, cutting-edge technology within a solid chassis that will stand the harsh conditions of repeated recoil forces of a slide ride pistol and the abuses encounter under everyday range and hunting conditions. We are thoroughly impressed with the quality of construction and feature-rich options housed within the 507C MRDS.

If you are interested in a red dot sight for a pistol to use in the self-defense or duty, carry role then I suggest the 508T-RD X2. 

Update for 2020 The 507C X2 demonstrated that Holosun was listening to its customers. First of all, they fixed our one CON from the previous model by moving access to the battery from beneath the optic to an easy-to-access side battery door.

The other great operational feature for the 507C V2 update is replacing the tiny pencil eraser control buttons with nice large and clean tactile buttons. Unfortunately, the large buttons were removed and replaced with smaller but still functional ones with the update to the X2.

Holosun 507C mounted on Ruger PC9 Carbine

When you purchase this sight, you will get a top-performing optic suitable for professional and civilian applications.  With three reticle pattern choices and twelve brightness levels, there are thirty-six options for target engagement in just about every environment and any condition.

We know most of you will likely purchase the 507C X2 for pistol/handgun setups, but this sight will perform equally as well on a rifle, carbine, or shotgun. We have given the Holosun HE507C-GR X2 Elite an unwavering endorsement. You will not be disappointed when you purchase this sight.

Top Features of this Holosun Red Dot Sight


The Holosun 507C X2 is computer numerical control (CNC) machined  7075- aluminum giving it a rigid, lightweight chassis. The sight weighs only 2.65 oz and is 1.8 inches in length and  1.2 inches wide. The sight has the same footprint as the Trijicon RMR and will fit any milled slide or mount for the RMR.

The HE507C-GR X2 has a low-profile rounded top that is 1.6 inches high, providing a 0.63-inch x 0.91-inch viewing window. The sights rounded top and protrusion-free sides enable snag-free operation advantages when drawing and operating in conjunction with tactical gear.

The sight sports a water Ingress Protection of IP67 rating, making it suitable for continuous immersion in depths up to 1 meter for half an hour. With an IP67 rating, you can operate the sight in pretty much any environment without fear of damage from moisture or dust.


With the 507C-GR X2, you get 3x reticle options. There is a 2 Minute of Angle (MOA) green dot for use when precision is vital.  When target acquisition is the priority, you can switch to a 32 MOA green ring reticle. You can use both the 2 MOA green dot and the 32 MOA ring simultaneously. When switching between these reticles options, you won’t have to worry about re-zeroing as the sight will maintain Point of Aim  (POA)/ Point of Impact (POI).

Holosun 507c Reticles

(Left) 507C-GR 32 MOA & 2 MOA reticle vs (Right) 507C 32 MOA ring reticle

The reticle is illuminated with the new Super Green LED. The LED was created by Holosun Technologies to be four times more efficient than their standard red diode.  The green Led is power efficient even when set to the higher brightness settings.

The sight has 12 brightness settings. Ten of the settings are for daylight conditions. The two additional settings are night-vision compatible.  With this many illumination brightness settings, shooters will have no problem dialing it into any light condition.

A green dot is a great option for people with protanomaly, a fancy word for vision with reduced red light sensitivity.

Holosun HE507C GR Elite Reticle


Holosun Technologies have included their Shake Awake feature in the  HE507C-GR Elite green dot sight X2.  This feature allows the optic to go into sleep mode when it does not detect movement after a user’s specified amount of time. When the sight senses motion, it will turn itself on to the last brightness setting used.

The Shake Awake aids in battery power conservation and allows for an always-on operation of the sight, which is mandatory for professional use or self-defense applications.

Also included in this green dot sight is Holosun’s Solar Failsafe feature. Amazingly this optic can power the illumination completely from an ambient light source. The 507C X2 also incorporates power from a CR1632 lithium coin cell battery.  The battery and solar array give it an operational battery life of up to 100,000 hours.  It will be years before you will have to change this battery.


The 507C X2 has an industry-standard footprint. For comparison, this sight will fit the Trijicon RMR mounting footprint.

The sight comes ready to mount on a standard Picatinny standard rail interface. Using the provided Picatinny mount, the sight has a single recessed machined hex bolt for snag-free operation.  The 507C makes a great MRDS option for shooters, hunters, or law enforcement professionals.

Depending on your application, you may need a different mount to achieve co-witness with your iron sights.


Included with your purchase:

  • Holosun HE507C-GR X2
  • Picatinny mount
  • CR1632 lithium coin battery
  • Mounting screws
  • T10L Key
  • Lenses cleaning cloth
  • Users manual

Other Features:

We don’t want to finish our Holosun HE507c-GR X2 review without bringing these other features.

The solar array serves as a light sensory queuing the sight for automatic reticle brightness adjustment base on surrounding light conditions.

The 507C X2 provides a Parallax-free operation with unlimited eye relief for a trusted point of aim point/ point of impact, all achieved with rapid target acquisition.

Holosun 507C V2 on Glock Modular Optic System (MOS)

The Holoson Elite Warranty: You get a lifetime warranty on the housing and the lenses with a ten-year warranty on LED and electronics from the manufacture date. Don’t forget to register it with Holoson to validate the warranty.

The sight has a large viewing window along with a crisp dot that makes acquiring the dot and your target easy and fast.

Click here to check out the Holosun HE507C-GR V2 Elite 2 MOA Green Dot Sight at Amazon.com

The Holosun HE507C-GR Elite Specifications Overview:


2MOA Dot & 32MOA Ring

Brightness Setting

10 Daylight & 2 NV Compatible

Light Source

Super LED



Unlimited Eye Relief


Parallax Free




Battery Type

CR1632 lithium coin battery

Battery Life

Up to 100,000 Hours

Adjustment per Click


Windage Adjustment

±50 MOA

Elevation Adjustment

±50 MOA

Storage Temperature

-40℉ - 158℉

Working Temperature

-22℉ - 140℉



Housing Material

7075 T6 Aluminum

Surface Finish

Hard Anodized

Housing Color


Weight (oz)


Pros vs. Cons of the 507C X2

The Pros

The Holosun HE507C-GR Elite green dot sight is exceptionally reliable and ready for just about any shooting situation in any environment.

The sight’s low profile small form factor is perfect for an EDC handgun application but would be an ideal MRDS for a  shotgun, carbine, or rifle.

This green dot sight has an extremely long battery life thanks to automatic shut-off/on, CR1632 battery, and the incorporation of a solar array power.

The 507C-GR has a green LED illumination source that provides a crisp visible green dot even in bright conditions.

The Holosun Technologies Multiple Reticle System (M.R.S) allows the shooter the choice between a 2 MOA green dot reticle, a 32 MOA green ring, or both. Some people prefer the 32 MOA for Close Quarter Combat (CQB) situations, while others like the 2 MOA green dot for precision and a less obstructed target picture.

The Cons

Since the update to the 507c V2, we have removed our previous con of an under the optic mounted battery.

We have now added that with the updated version (X2), the larger buttons have been reduced and moved to a lower placement on the optic body.

Customer Feedback for this Holosun Reflex Sight

The Holosun HE507C-GR Elite has 4.6/5 stars with just ten customer reviews. It was not enough for a warm and fuzzy, so we looked at the red dot version of the Holosun 507C, and it currently has 4.3/5 stars with over 65 reviews.

What shooters, hunters, and gun enthusiasts liked about this sight:

Performance: The sight delivers on all fronts providing a reliable reflex sight with all the needed bells and whistles for a price that is less than its competitors.

Reticle: Shooters appreciated the options concerning the reticle pattern.  The ability to switch between the 2 MOA dot and the 32 MOA ring provided additional options that expand the 507C X2 breadth of application.

Illumination/Lenses: The 507C delivers a clear viewing experience with enough reticle brightness options for a sharp dot under almost any conditions imaginable.

If you need a side-by-side comparison of red dot sights for a pistol, read our 8 Best Pistol Red Dot Sight Review plus buyers guide.
Holosun 507c X2

HE507C-GR V2 with side mount battery update

Common Questions about the Holosun 507C

Does the Holosun 507c fit the RMR cut?

Yes, the Holsosun 507C has the same footprint as the Trijicon RMR. In many cases, you can use the same mounting plate as the RMR but will need longer screws.

Where are Holosun optics manufactured?

Holosun Technologies has an established headquarters in Walnut California, but Holsoun sources their manufacturing from China.

Are red dot sights better than iron sights?

Red dot sights eliminate the need for a rear to front sight alignment associated with iron sights, decreasing the time to acquire a sight picture. Simply put the dot on the target.

Best place to buy the Holosun 507C V2

We recommend purchasing the Holosun HE507C-GR Elite 2 MOA Green Dot Sight X2 from  Amazon.com.  You get a great price and fast shipping!

Click here to check out the Holosun HE507C-GR X2 Green Dot Sight at Amazon.com

Variations of the Holosun 507C V2:

Holosun has many options when it comes to reflex sights. If you would rather have a red dot version of the Holosun 507C, you can purchase it at Amazon.com

Click here to purchase the Red Dot version, the Holosun HS507C X2 Reflex Sight at Amazon.com

Alternate options for this red dot sight:

If you are looking for an optic with a little more time on the street and a slightly higher price than you can read our review of the Trijicon Type 2 RMR, just click here.

Click here to purchase the Trijicon RMR Type 2 6.5 MOA Adjustable LED Red Dot Sight at opticsplanet.com  for a  great price and fast shipping.


Click here to purchase the Leupold DeltaPoint Pro Reflex Sight at Amazon.com