Holosun 515GM Review

In my opinion, the Holosun HS515GM is currently the best red dot that Holosun offers. Some called it the Aimpoint Micro killer!

In this Holosun 515GM review article, let's just take a look at this red dot sight, and see why this maybe a better option than buying an $900 Aimpoint that potentially ships without a mount.

Holosun 515GM Overall Quality

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Why Trust Me

I've purchased most products using our own money, therefore the review is unbiased and there isn't any time constraint or outside influence on how I test them. After 15 years of real steel shooting experience I have seen what works, what doesn't and what's complete waste of money. 

My first Holosun red dot sight was made for airsoft, but that thing fell apart very quickly when the screw thread was easily stripped. It was an earlier product way before Holosun became a big competitor in the optics world. The 515GM today is a completely different beast that I have tried. Read testing guide

The HS series of Holosun red dots is made out of aircraft grade aluminum, while the HE series represents the elite models made of titanium.

The 400 series red dots have a single 2 MOA dot, while the 500 series red dots feature the circle reticle.

The 515 series of dots have some additional features compared to the budget 503 series, including the use of 7075 T6 aluminum, a quick release mount, and the capability to accept a kill flash and flip-up lens caps, which are included.

Holosun 515GM Specs & Performance

• Window size: 20mm
• Reticle: 2 MOA Dot & 65 MOA Circle
• MOA turret: 0.5 MOA per click
• Dot color: Red
• Material: 7075 T6 aluminum
• Submersion: IPX8
• Battery source: CR2032
• Battery life: 50000 hours
• Mounting footprint: Aimpoint Micro
• Length: 2.73"
• Weight: 3.74 oz

The HS515GM is my favorite among all the models that Holosun manufactures that uses the Aimpoint Micro mount. When I first tried their 400 series Aimpoint alike optics,

I was disappointed that the screw threads can easily strip because it's 6061 T6 aluminum. After that I have never touched that optic until the HS515GM came along. 

One of the most significant differences between the 515 series and the 503 series is the greatly improved mount on the 515s.

These mounts are robust and superior to the ones that come with cheaper models, and the body is hard anodized, making them worth the investment. The bottom of the mount has multiple integrated recoil lugs, making it even more reliable.

The factory mount works, but I immediately switched to my favorite Unity Tactical FAST mount or the Scalarworks LEAP. They are higher quality and they held zero for most of my red dot sights in the past 4 years owning them. 

Accuracy

The accuracy of the Holosun 515GM is just as good as other red dot sights. It's not an airsoft red dot, so it can retain zero on most 5.56 guns as long as the mount is solid and zeroing was done correctly.