HOLOSUN HE503CU-GR / HS503CU Multi-Reticle 2 MOA Dot & 65 MOA Circle Micro Sight for Rifles - Solar FailSafe Shake-Awake Waterproof Aluminum Sight with 12 Brightness Settings - Red/Green Dot Options
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Availability:
Only 7 left in stock, order soon!
Arrives
Friday, Jan 30
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Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
Features
- HOLOSUN RED DOT SIGHT - The HS503CU is a 20mm micro sight designed for rifle and carbine applications; It features Holosun's ultra efficient 650nm Red Super LED with up to 50k hour battery life and 12 reticle intensity settings; The housing is made from 6061 aluminum and includes both a lower 1/3 co-witness mount (1.63") and a low mount (.75") for low-comb height rifle applications; Lens cloth, rubber lens cover, T10 L key, and CR2032 battery included
- SHAKE AWAKE TECHNOLOGY - Extends battery life by deactivating the optic's LED while not in use; Shake Awake offers settings from 10 minutes to 12 hours depending on the model and can be deactivated altogether if preferred; The slightest touch of the optic instantly reactivates the LED so your Holosun sight for rifle is ready when needed
- MULTI-RETICLE SYSTEM - This Holosun red dot sight is equipped with MRS to let you select a fast sight picture for shorter distances with a 65 MOA circle with 2 MOA dot; The large circle allows for a hold-over reference and helps guide your eye to the 2 MOA dot; The large ring can be deactivated leaving just the 2 MOA dot for an uncluttered sight picture and increased precision
- SOLAR FAILSAFE - If your battery fails, this red dot sight for rifle has a backup power source when natural or artificial light is available; Solar Failsafe is activated while in Auto Mode where reticle intensity is automatically adjusted: in brighter conditions, you have a brighter reticle and in lower-light conditions, the reticle will step down in intensity to match any lighting conditions
- SPECIFICATION - Reticle: Red 2 MOA Dot & 65 MOA Circle; Light Wavelength: 650nm; Magnification: 1x; Parallax Free & Unlimited Eye Relief; Power Source: Solar & Battery; Battery Type: CR2032; Battery Life (Hours): 50000; Brightness Setting: 10 DL & 2 NV; Window Size: 20mm Diameter; Housing Material: 6061 T6 Aluminum; Adjustment per Click: 0.5 MOA; W&E Travel Range: 50 MOA
Description
HOLOSUN HE503CU-GR / HS503CU Multi-Reticle 2 MOA Dot & 65 MOA Circle Micro Sight for Rifles - Solar FailSafe Shake-Awake Waterproof Aluminum Sight with 12 Brightness Settings - Red/Green Dot Options
Brand: HOLOSUN
Color: Black
Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
Sport: Hunting
Item Weight: 0.4 Pounds
Material: Aluminum
Objective Lens Diameter: 20 Millimeters
Magnification Minimum: 1 x
Compatible Devices: Rifle, Carbine
Mounting Type: Weaver Mount
Brand: HOLOSUN
Color: Black
Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
Sport: Hunting
Item Weight: 0.4 Pounds
Material: Aluminum
Objective Lens Diameter: 20 Millimeters
Magnification Minimum: 1 x
Compatible Devices: Rifle, Carbine
Mounting Type: Weaver Mount
Night vision: No
Hand Orientation: Ambidextrous
Thread Type: Weaver Mount
Model Name: MICRO RED DOT OPTIC - 2MOA DOT & 65MOA RING
Manufacturer: Green Supply
Reticle Type: 2 MOA Dot & 65 MOA Circle
UPC: 605930624540
Global Trade Identification Number: 40
Item Package Dimensions L x W x H: 4.76 x 3.58 x 3.15 inches
Package Weight: 0.36 Kilograms
Item Dimensions LxWxH: 5 x 4 x 4 inches
Brand Name: HOLOSUN
Warranty Description: Limited Lifetime
Suggested Users: unisex-adult
Number of Items: 3
Part Number: HS503CU
Included Components: Low mount & 1/3 Co-witness mount
Date First Available: June 4, 2016
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jan 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
Took a while to debate between a red dot or a green dot, and was waiting for a gold dot. After several weeks, finally decided to just go for the Red version. I'm installing it on a CZ Scorpion EVO3 S1. Installation and setup is rather easy and many reviewers have already mentioned. I just want to mention a few things here. (1) Brightness. If you are shooting outdoor, the automatic mode works just great. However, if indoor range, then the automatic mode is disfunction, if not a nightmare at all. Since the target is often well-lited yet the shooting bay tend to be dark; (2) Parallax. Okay if you are shooting an AR over 100 yards, parallax can still be an issue. If SBR or sub machine gun, and the range is around 20 - 50 yards, that impact isn't that much; (3) 2MOA and 65MOA. This is really interesting. I'm using the default tall mounting bracket. If you zero at 25 yards (its a Scorpion, not AR 15, so I don't think 100 yard or beyond will be that useful). You can roughly use the lower tick of 65MOA if shooting at target at 12 yard, and the higher tick if target at 50 yard and so on. (4) If you have myopia and don't wear correction lens, then you will have trouble seeing the reticles clearly. I wish HOLOSUN can have adjustment lens like those in SLR viewfinder. I have decided to set the sight in MANUAL mode, and set the brightness around 8, which works in most of the time. Sight zeroing is a long process, mine took two separate tests, and still have room to adjust. I guess if you change the ammo, i.e., 147gr instead of 115gr, the marking can be different (just guess, have yet confirm). All in all, a great sight. Sufficient function and really easy to shoot.
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Reviewed in the United States on January 29, 2021 by New Smartpen Fan
Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
I have an Eotech 512 and an Eotech XPS2 on my ARs. I saw a Youtube review where the guy mentioned the Holosun. I went on their webpage and did some research, and decided on the 503CU. I am VERY HAPPY that I did. This is an amazing sight! The site has battery & solar power, so if you're shooting in light, the battery will last essentially forever. I'd like to clarify some features on this also: You can set this sight to auto. It will adjust the brightness of the reticle based on the ambient light. If you set the brightness manually, it will remember that brightness. This is what I'm using because I didn't like it changing brightness on me. Here's the thing that I really love about this sight. It is auto on / off. If you leave the sight for 10 minutes, it turns off. That, in itself, is a great feature. But better than that, when you pick up the gun, the sight turns on automatically! This sight is completely automatic. I zeroed it at 36 yards on a CZ Scorpion 9 mm. I am hitting a steel plate at 300 yards with it. I have fired over 300 rounds through the Scorpion with the Holosun on it, and it is still dead on. Bottom line: I cannot say enough good about this sight. It is amazing. I am very happy with it. OH, and one more thing: this sight comes with a riser. I mounted this one on my Scorpion, which was too tall. I removed the riser, and it is perfect. I ordered another one to put on an AR. The riser made it the perfect height for the AR. If you're on the fence, buy it. You won't regret it. This is a very nicely made, solid & accurate sight.
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Reviewed in the United States on December 7, 2018 by CKJ CKJ
This is a very nice unit that uses the same footprint as the Aimpoint T1, T2 etc. I mounted it on a Marlin 45-70 using the Midwest Industries ghost ring setup and couldn't be happier. Highly recommended!
Reviewed in the United States on August 10, 2025 by John John
Style: Red 2 MOA Dot & 65 MOA Circle (HS503CU)
I've been so pleased with my experience with my Holosun 503CU that I wanted to take the time to leave a review for shooters that have Astigmatism. If you've used a red dot sight (RDS) before and the dot appears blurry, smeared, or in a starburst - then you probably have Astigmatism. A quick way to check to see if the RDS is working fine is to take a picture through the optic with you camera phone and see if the dot is clear. If it is, then you'll know it's your vision. I wear contact that treat my Astigmatism, but they do not completely nullify the effects. I typically see a small starburst - it looks a lot like a dot would appear if the RDS brightness was turned too high (dot gets fat aka "blooms"). So, why do I recommend the Holosun 503CU a great, budget-friendly RDS? I've tried a Vortex Spitfire AR, Sig Romeo5, and the Vortex Sparc II AR. For just about $40 more, you can get a solar failsafe feature, Shake Awake, and the option of switching to a 2 MOA dot and or a 2 MOA Dot/65 MOA circle. That alone was worth it. The Spitefire was supposed to help people with Astigmatism since it overlays on a reticle (red dot and MOA circle options), but it has restrictive eye relief and it's heavy. The Sparc II has a pretty bad bloom after the 6th setting and doesn't have a shake 'n wake feature. The Romeo5 feels the "cheapest" out of all - a RDS for casual shooting. The 12 brightness settings on the Holosun 503CU means each step up or down is more incremental so you can find an in between setting for your eyes. If my Astigmatism is acting up a bit, I can turn the RDS brightness down some to help. The dot is super clear with a 3X magnifier. The Shake Awake feature means you don't have to press any buttons but you might as well leave it on with 50,000 hours on a CR2032 batter (wow). Works great with mil-spec sights at 1/3 co-witness AND you can see through the riser if the glass gets damaged. It's also got 2 NV settings, but I can't try it. Anything I'd like to have for a future option? Would be nice to have more of a ledge to install flip caps. Would also like to have a QD mounting system. For about $250 - it's a nice step up versus other RDS options in the $200 range. I think I saw Garand Thumb and Travis Haley testing it as a budget-Aimpoint option. Would I trust if for years of service in a home defense capacity? It's only been 4 months, but I'd have to say yes it'll fit the bill. Can you be rough with it? Not sure. I don't know how Holosun has been rated in military/LE environments. For home defense and indoor/outdoor target shooting, it offers a ton of value and is amassing a nice customer base.
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Reviewed in the United States on February 16, 2021 by AttaboyAdley