Micro Handgun Red Dot Sights

AR Red Dot Sights

Holosun Paralow HS503G ACSS

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Holosun Paralow HS503G

Holosun Paralow HS503G ACSS

(3 reviews)

Discontinued

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Holosun Paralow HS503G ACSS Product description

About the Paralow series

Paralow is one of the red dot sight series made by Holosun. On the outside, these small tube sights are very familiar to the Micro red dot sights made by the famous Swedish red dot sight manufacturing company. The illumination is powered by a CR2032 battery. The click value for the elevation and windage adjustments is 0.5 MOA. These durable red dot sights feature a single-piece housing made out of aluminum. Altogether, there are 12 illumination intensity levels to choose from, 2 of which are NVD compatible. The battery life is 50.000 hours.

About the model family

The 503 is one of the model families in the Paralow series. Normally, the first number '5' in its name suggests that the user can switch between a 2 MOA dot and a 2 MOA dot surrounded by a 65 MOA circle. This model, however, is a little bit different – the user can switch between a 2 MOA dot and an ACSS reticle. The second number '0' implies that the product comes with standard accessories (without honeycomb filter, quick-release mount and flip-up lens covers).

About the product (HS 503 G-ACSS)

Holosun 503 G ACSS is a red dot sight of the Paralow series.

The letter 'G' means that the battery compartment of the red dot sight is on the right side of the device, under a round-shaped cover. Also, it lacks the solar panel, which is why this model has buttons for the regulation of illumination intensity on the top instead of on the side.

Holosun Paralow HS503G red dot sight is of the small tube type and thus bigger than a typical open reflex sight.

This model comes with Primary Arms' ACSS reticle which is popular because of its all-round use (it allows ranging, features BDC dots and wind leads, etc.) It is compatible with many calibers, including 7.62 NATO and 5.56 NATO (holdovers from 100 yards to 600 yards).

Holosun ACSS 503G features the ShakeAwake function. When left powered on, the device will go from 'active mode' to 'sleep mode' after a while to prevent unnecessary battery drain. Once moved, it will power back on immediately.

Holosun 503G works perfectly with a 3x magnifier which makes it easier to clearly see the bullet drop compensation reticle.

Main features:

2 MOA dot & ACSS CQB reticle
comes with a low mount and a high mount for lower third co-witness on standard AR platforms
ShakeAwake
same mounting platform as Aimpoint Micro devices
12 illumination intensity levels, 2 of them are NVD compatible
Parallax free
50.000 hours of battery life
the battery compartment is on the right side of the device under a round shaped cover
this red dot is not solar powered

Mounting details

These small tube sights come with a high mount for an AR platform (lower 1/3 co-witness) and a low mount for other mounting purposes (such as mounting on a rifle). All models in the Paralow series except the ones with the letter 'A' in their name have the same mounting platform as the Aimpoint Micro devices.

Warranty

Holosun red dot sights (non-elite models) come with a 5-year warranty on the material and 3-year warranty on the electronics.

For more information regarding the Holosun symbols, check our blog post.

General properties

Manufacturer	Holosun
Dot sight series	Holosun Paralow
Made in	China
In production since	2017
Warranty	Holosun Classic - 5 years (Housing) / 3 years (Electronics)
SKU	605930624557

Reticle properties

Reticle	ACSS CQB
Reticle illumination	Yes
Illumination color	Red
Daytime-usable illumination	Yes
Auto Turn-Off	No
Parallax setting	Free of Parallax

Physical properties

Weight.	140.00 g
Material	Aluminium
Working temperature range	-
Power Supply	CR2032
Filled with	-
Lens coating	Fully Multicoated
Tube diameter	-
Footprint	Aimpoint Micro standard
Integrated mount type	Fixed mount
Dot Sight Type	Small tube sight
Color	Black

Special features

Waterproof	Yes
Fogproof	Yes
Shockproof	Yes
Special features	Fogproof, Fully multicoated, Illuminated reticle, Mount rail, Shockproof, Waterproof
Mount rail type	Picatinny Mount

Most common questions (Q&A)

Need help? Not sure about something? Don't hesitate - ask our community! Our experienced community is here to help you with this question.

Hi. It id fit on my M16 A1. ? and its good for long range up to 500 M ?

by Ahmed

Dear Sir,

thank you for contacting us.

We kindly apologize for the late reply, which is a result of the increased demand for our services.

This product is designed to fit a Picatinny rail. Unfortunately, the red dot sight is suitable for distances up to maximum of 150 meters.

Should you require any further assistance, please do not hesitate to contact us again.

Kind Regards,

by Optics Trade team

Hi,
is the Holosun Paralow HS503G ACSS Night Vision Compatible ?

Best,

by Evgeni

The reticle and the device's illumination system are compatible with night vision devices without a problem.

by Optics Trade team

Is it possible to easily disable the 65 MOA Circle and still use the reticle parts in center line= 1 arrow+3 dots? This is what can be read from documentation but just asking to be sure about this item "Holosun Paralow HS503G ACSS", that OT is selling.

by Mats

Yes, it is possible to disable the 65 MOA Circle and use only the middle part of the reticle.

by Optics Trade team

Hey optics trade team. I'm interested in an holosun especially with the ACSS system. Do you ship to germany and are you offering discount for soldiers? Best regards

by Jens

We can ship to Germany without a problem. Unfortunately, we are unable to offer a discount on this product.

by Optics Trade team

Hi, has this sight got a red dot reticle, too? Or only ACSS one? Thanks.

by Dorian

This model only has the ACSS CQB reticle.

by Optics Trade team

Hi, has this sight got a red dot reticle, too? Or only ACSS one? Thanks.

by Dorian

This model only has the ACSS CQB reticle.

by Optics Trade team

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4 stars 1

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Holosun Paralow HS503G ACSS

Holosun Paralow HS503G ACSS is a Great Red Dot optic for the money, or for any money, light and sturdy, comes with all the acessories needed to mount it on a rifle/ shotgun. The ACSS reticle is great for several calibers. It is a shame it is not available anymore. Holosun and the ACSS reticle are a great combo.
Would recommend it!!

Review by JNT

Posted on 1/12/24

Good optics.

Glass clarity is good(9/10 compared to Aimpoint)-no distortion, negligible parallax shift, good low light visibility, only a small reddish tint .
Reticle is sharp, with good brightness settings. Chevron is rather small so basically it is usable like a red arrow pointing from below at the point of impact, very easy to utilize. Trough a 3x magnifier dough it is very usable.
windage and elevation adjustment knobs with audible clicks work well. Battery compartment seem pretty watertight-does not come with a battery so have one at hand.
Brightness buttons are on top and that is a bit cumbersome, especially on a heavier rifle, as it implies to hold the rifle shouldered with only the shooting hand while pressing down on the adjustments with the off hand(and the buttons are a bit stiff in order not to be pressed accidentally).
About mounting: The mounts are well made but the high one is very high(on my HK MR223-height of the aperture is 34-35mm from the rail) it co-wittiness at the lower edge of the glass-way lower than 1/3). So I solved the problem like this: for 1/3 co-witness I bought a MNT-RS08S2 riser(20mm rise) in conjunction with the lower mount; for near perfect absolute co-witness I utilize the MNT-RSQD403 riser(15mm rise) with the low mount.
About the seller: good and very fast communication(on technical aspects-asked for some specific dimensions so that I can order the riser before having the optics in my hand and the answer was quick and precise), good packaging, good and fast shipping options,.
Recommend!

Review by Sergiu

Posted on 1/12/24

Good red dot for the price, with an excellent reticle.

Had this Holosun now for a year. It has been to the range with my roughly thirty times or so and had thousands of rounds fired with it. I have not had a single issue with the optic.

I had to change the battery nine months in, but it has been on quite often (I even forgot it on a couple of times for weeks).

All in all I have been happy with the purchase and can easily recommend this optic. Special thanks go to the excellent ACSS reticle, which works perfectly with an 3x magnifier.

Review by OG

Posted on 1/12/24

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Info

Looking for useful documents about this product? Here they are:

Instruction Manual SLIDES

ACSS reticle SLIDES

Catalog 2020 Elite SLIDES

Catalog 2020 Classic SLIDES

ACSS reticle PDF

Catalog 2020 Elite PDF

Catalog 2020 Classic PDF

Instruction Manual PDF

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Holosun Paralow HS503G ACSS Product description

About the Paralow series

About the model family

About the product (HS 503 G-ACSS)

Mounting details

Warranty

General properties

Reticle properties

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