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  • Post last modified:August 18, 2023
In this Holosun 507K VS 407K comparison guide, we want to cover the major differences that actually matter to serious red dot sight users. These are similar optics but they offer different reticle options. 

The 407K is about $100 cheaper than the 507K. Here are my insights on their main differences after using both of them.

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Holosun 507K VS 407K - Main Differences

holosun 507k x2 on p365 xl pov

Holosun 507K Specs

Magnification: 1X

Reticle: 2 MOA dot, 32 MOA ring, or combined

Turret Value: 1 MOA / click

Window Size: 0.58" X 0.77"

Construction: 7075 T6 aluminum IP67 rated

Dimension: 1.6" X 0.98" X 0.95"

Weight: 1 oz

Battery Life: CR1632, 50K hours

Brightness Settings: 10 daylight, 2 night vision

Holosun 407K Specs

Magnification: 1X

Reticle: 6 MOA dot

Turret Value: 1 MOA / click

Window Size: 0.58" X 0.77"

Construction: 7075 T6 aluminum IP67 rated

Dimension: 1.6" X 0.98" X 0.95"

Weight: 1 oz

Battery Life: CR1632, 50K hours

Brightness Settings: 10 daylight, 2 night vision

holosun507 k x2 unboxing inside

The main difference between Holosun 507K and 407K is the reticle options and price difference. Ultimately, they have the same Grade 5 Titanium body (2X tensile strength and as high as 5X the fatigue strength of 7075 Aluminum)

The same body specs, the same window size, the same 50000 hours battery life, and the same RMSc mounting footprint.

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The biggest attraction for the Holosun 407K is the 6 MOA dot, which is honestly the best option for users with astigmatism. The 6 MOA offers a much crispier dot reticle, which appears rounder with less emitter glare if the brightness is dialed up.

In addition, the HS407K X2 enhances the prior model by incorporating Lock Mode, initially featured in our 2018 LEM pistol optic models. Once engaged, Lock Mode secures the buttons, thus preventing unintentional adjustments to the settings.

6 MOA outdoor sunny day

The Holosun 507K comes with the multi reticle options:

  • 2 MOA only
  • 32 MOA ring only
  • Combined

Based on my personal experience, the multi reticle feature is a nice to have that comes with the Holosun 507K, but it doesn't significantly change the way a person shoot.

The 2 MOA dot is a standard size dot that most red dot sights like Aimpoint Micro, Sig ROMEO 5 and other products feature.

Precise Without Being Too Small - The 2 MOA dot is much more precise and easier to pick up without being too small like the 1 MOA dot.

More feedback - The dot appears to be more "wiggly" due to its smaller size, which helps the shooter become more aware of their movements and potentially improve their shooting technique.

Versatility: A 2 MOA dot can be suitable for a wider range of shooting applications, from close-quarters combat to longer-range target engagement. Its smaller size and increased precision make it a versatile choice for various shooting scenarios.

Check out more: Holosun 507K X2 full review

holosun acss long range shot low light

The new 507K ACSS reticle actually provides a chevron finite tip reticle that clutters less the FOV, and the outer ring helps the shooter to find the reticle center faster.

Experiences With The Subcompact Pistols

holosun 507k on p365 XL

After using both optics on and off for about 2 years. I have tested both on Glock 43X MOS, Springfield Hellcat and Sig P365XL.

Both optics still have noticeable lens distortion. It's like a slight 1.1X zoom. But for shooting targets up close it's not a big deal.

The 6 MOA dot is still my favorite because it's simple to operate, and it works well for astigmatic eyes. When using the 6 MOA model, I don't have to remember button pressing combo to change the setting. All I had to do is press and hold "+" button to lock and unlock the setting.

The 507K's 32 MOA ring is great for close up target acquisition, but the reticle gets too cluttered when aiming for something further away. I often find myself dial back to the 2 MOA single dot, or forgot how to change the settings on the 507K without a manual.

(Remember: Press "-" for 3 seconds to switch) 

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