Add to your order

  • Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
  • 24/7 support when you need it.
  • Quick, easy, and frustration-free claims.
Cover this product:
2-Year Protection $24.99
3-Year Protection $33.99
Cover all of your eligible devices:
Asurion Complete Protect: One plan covers all eligible past and future purchases (Renews Monthly Until Cancelled) $16.99/month

Add to your order

  • Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
  • 24/7 support when you need it.
  • Quick, easy, and frustration-free claims.
Cover this product:
$249.99
FREE delivery Friday, May 10. Order within 21 hrs 56 mins. Details
Only 1 left in stock - order soon.
$$249.99 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$249.99
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Primary Arms
Ships from
Primary Arms
Sold by
Primary Arms
Sold by
Primary Arms
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
Read full return policy
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Include
Add a Protection Plan:
Sorry, your monthly warranty plan was removed because these plans are currently only available for single-item orders.
Add to your order

2 Year Portable Electronic Accident Protection Plan

from Asurion, LLC
(3213)
  • No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
  • Coverage: Malfunctions covered after the manufacturer's warranty.
  • Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
  • Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
  • Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Learn more

3 Year Portable Electronic Accident Protection Plan

from Asurion, LLC
(5356)
  • No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
  • Coverage: Malfunctions covered after the manufacturer's warranty.
  • Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
  • Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
  • Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Learn more

Asurion Complete Protect: One plan covers all eligible past and future purchases on Amazon

from Asurion, LLC
(688)
  • Buy a lot of stuff on Amazon? Tons of items eligible for coverage, from the latest tech like laptops, game consoles, and TVs, to major appliances, sporting goods, tools, toys, mattresses, personal care, furniture, and more.
  • Accidents happen. That’s why for your portable products we cover accidental damage from handling such as drops, spills and cracked screens. We also cover electrical and mechanical malfunctions, power surges, and wear and tear.
  • Past and future purchases covered. 30 days after you are enrolled, all eligible past purchases (up to 1 year prior to enrollment) and future eligible purchases made on Amazon will be covered by your plan as long as you are enrolled.
  • Fast, easy claims. Frustration-free claims, with most filed in minutes. We will fix it, replace it, or reimburse you with an Amazon e-gift card for the purchase price of your product (excluding tax). File at Asurion.com/amazon.
  • No hidden fees. For just $16.99 a month + tax you’re covered for up to $5,000 in claims per 12-month period. *THIS PROGRAM IS MONTH-TO-MONTH AND WILL CONTINUE UNTIL CANCELED* Coverage for all products ends 30 days after the plan is canceled. Cancel any time.
Learn more

Holosun Paralow HS503G Red Dot Sight - ACSS CQB Reticle with Auto-On Function

4.3 4.3 out of 5 stars 264 ratings
$249.99
{"desktop_buybox_group_1":[{"displayPrice":"$249.99","priceAmount":249.99,"currencySymbol":"$","integerValue":"249","decimalSeparator":".","fractionalValue":"99","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"zBhljeZXSGw1BWU1%2Fc6aAeVDlW%2Bu0zyfvPyfP03ddmWOjiwAr%2BtrMHgQrSv2GMI%2FgafpY0nV3lhwgV5npYIpqugJpILJz4slRoIZ25oyhzULmP8bA5kpoGshqr8MDBOePVhhkD0a09F%2BgoHPN%2BTJ14QJuhuJHpGW8BzVxY9V%2FtRJ1iEpHkGiYhxFN%2BPAcCGJ","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

Brand HOLOSUN
Color Red
Sport shooting, hunting
Item Weight 4.87 Ounces
Material Aluminum
Magnification Minimum 1 x
Compatible Devices Handgun
Mounting Type Riser Mount, Picatinny Mount
Night vision Yes

About this item

  • Exclusive ACSS CQB Reticle features a chevron that easily draws the eye to the target at close range
  • Tip of the chevron can be used as an aiming point for precise shots at longer distances
  • Red illumination with 10 brightness settings powered by a common CR2032 battery
  • Auto-on function allows the user to switch the power on with a slight movement of the red dot
  • Includes a removable 1913 Picatinny rail base and lower 1/3rd co-witness riser mount
Add a debit or credit card to save time when you check out
Convenient and secure with 2 clicks. Add your card

Frequently bought together

Holosun Paralow HS503G Red Dot Sight - ACSS CQB Reticle with Auto-On Function
$249.99
Only 1 left in stock - order soon.
Ships from and sold by Primary Arms.
+
Holosun HM3X 3X Flip-to-Side Magnifier w/QD Mount HM3X
$199.99
Get it as soon as Monday, May 13
In Stock
Sold by Prime Craft and ships from Amazon Fulfillment.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
One of these items ships sooner than the other.
Show details Hide details
Choose items to buy together.

Top Brand: HOLOSUN

Highly Rated
10K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Product Description

Primary Arms and Holosun have combined forces to bring you the power of the patent pending ACSS reticle in a red dot sight for the first time! The problem with dot sights is that a large dot is great up close but less useful at distances beyond 100 yards, because the dot becomes too large to aim with precision. A small dot used in conjunction with a magnifier fixes that problem but is slower to acquire in close range snap shooting. The ACSS reticle uses a large chevron that the eye picks up very easily for up close shooting. At longer distances, the tip of the chevron is an infinitely small aiming point perfect for taking precise shots. The ACSS features three BDC dots underneath the chevron, allowing an unprecedented 600 yards of bullet drop compensation in 7.62 NATO or 5.56 NATO calibers. Auto ranging and wind leads are also incorporated into this smart reticle. The horseshoe grabs the eye instantly for close quarters shooting and also approximates the spread pattern of 00 buckshot at 25 yards. The reticle for this sight is a central 2 MOA dot, centered in a 65 MOA circle with four positioning points. The diameter of the circle reticle represents approximately 5'5" at 100 yards 170cm at 100m. The HS503G is a proven micro dot sight with an auto-on function that switches on the power with a slight movement of the sight. It comes with a 1913 Picatinny base which is removable, revealing an Aimpoint Micro-compatible base underneath. It also comes with the lower 1/3rd co-witness riser mount shown in the photos. EXPORT CONTROLLED ITEMS: These items are controlled for export and may require an export license from the U.S. Government. Buyer acknowledges that Buyer is responsible for obtaining all export licensing authorizations and filing all export documents prior to export from the United States.

Product information

Technical Details

Additional Information

Feedback

Holosun

Holosun Paralow HS503G Red Dot Sight - ACSS CQB Reticle with Auto-On Function

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Looking for specific info?

Customer reviews

4.3 out of 5 stars
4.3 out of 5
264 global ratings

Customers say

Customers like the quality, value, and reticle of the aiming scope sight. For example, they mention it's well built, amazing for the price, and has a great retiCLE. Some like the ease of use, and brightness. That said, some complain about the size and performance.

AI-generated from the text of customer reviews

105 customers mention91 positive14 negative

Customers like the quality of the aiming scope sight. For example, they mention it's well-built, and a great product. Some say the lenses are clear and look great. Overall, most are satisfied with the quality and functionality of the sight.

"...This is a very effective red dot sight combining the ACSS reticle with the benefits of a red dot sight...." Read more

"My first red dot. Gotta say that this thing is very cool. Have not used it at any long distances yet, but where I have it zeroed, it works just fine...." Read more

"...CONS:- The mount is cheap but seemed stable. Since I wanted a QD system, I ended up getting a La Rue mount...." Read more

"...Overall: it feels sturdy, people tell me it looks sexy, and I know it performs great after 150 rounds. Will update here if I ever have problems...." Read more

48 customers mention40 positive8 negative

Customers like the value of the aiming scope sight. For example, they say it's amazing for the price, a very nice sight for the money, and a good budget optic.

"Great sight for a good price. Reticle is crisp and clear, wide range of brightness settings that work from pitch black to middle of the day...." Read more

"Very good budget optic. Glass is clear and bright, emitter is unobtrusive in field of view. The on-when moved feature is nice...." Read more

"This is a very nice sight for the money. I love the ACSS CQB reticle with the three BDC dots underneath the chevron...." Read more

"...You can't beat the performance, quality, and price combination of this brand. Next purchase will be the 5x prism for a medium range 5.56 build...." Read more

37 customers mention37 positive0 negative

Customers like the reticle of the aiming scope sight. They say it's great, outstanding, and useful. Some customers also mention that the ACSS retiCLE feature is usable even without magnification.

"...adjustments are easy to use, love the fact that you can add/remove the horseshoe reticle, and the 5,000 hour battery life allows me to keep the..." Read more

"...I was surprised that the acss reticle feature was useable even without magnification...." Read more

"Great idea, well built, quality piece. However, the ACSS BDC reticle is just to small to be used stand alone...." Read more

"...Not a big deal though.The reticle is awesome. I haven't gone much past 70 yards or so but I'm sure the subtensions are right on...." Read more

24 customers mention17 positive7 negative

Customers find the aiming scope sight easy to use and set up. They say it tracks just fine and is super simple to zero. They also say the instructions are good and convenient. Overall, customers are satisfied with the ease of use and recommend the product.

"PROS:- The price.- Easy to mount.- ACSS reticle is clear and crisp, provided it is adjusted to suit the ambient light level...." Read more

"...It tracks just fine and was super simple to zero, just had spongy feeling adjustments and barely audible/tactile clicks...." Read more

"...holosun product and this is a great optic but it is difficult to see / use at first...." Read more

"...It was very easy to mount, and I have it set up to co-witness through the factory sights that came on my CZ Scorpion...." Read more

15 customers mention15 positive0 negative

Customers like the brightness of the aiming scope sight. They mention that it has plenty of brightness for bright daytime use, the glass is clear, and the illuminated reticle is as good as their Eotech. They also appreciate the excellent brightness control, and say the brightness settings are easy to use. Customers also like that the reticule is crisp and clear, with no blooming or flaring.

"...The brightness adjustments are easy to use, love the fact that you can add/remove the horseshoe reticle, and the 5,000 hour battery life allows me..." Read more

"Great sight for a good price. Reticle is crisp and clear, wide range of brightness settings that work from pitch black to middle of the day...." Read more

"...Tip: The glowing recticle is extremely precise (small, see pictures)...." Read more

"Very good budget optic. Glass is clear and bright, emitter is unobtrusive in field of view. The on-when moved feature is nice...." Read more

37 customers mention24 positive13 negative

Customers are mixed about the clarity of the aiming scope sight. Some mention that the reticle itself is crystal clear, the glass is incredibly clear, and the view through the reticle is clear. However, others say that it's very blurry and the range between too faint to see and too much illumination is very narrow.

"...The reticle itself is crystal clear unless you crank the brightness up to full at which point I notice a slight blurring or haloing effect...." Read more

"Great sight for a good price. Reticle is crisp and clear, wide range of brightness settings that work from pitch black to middle of the day...." Read more

"...The distance BDC dots can bleed & become blurry to the naked eye if the brightness is up too high in contrast to the background, so adjust down..." Read more

"PROS:- The price.- Easy to mount.- ACSS reticle is clear and crisp, provided it is adjusted to suit the ambient light level...." Read more

35 customers mention24 positive11 negative

Customers are mixed about the performance of the aiming scope sight. Some mention it works very well once dialed in to cal and buhl waits, while others say it failed, did not work at all, and the shake awake system did not function.

"...Excellent quality and performance for about 1/4 the cost of it's competitors...." Read more

"...used it at any long distances yet, but where I have it zeroed, it works just fine...." Read more

"...Final: Liked the concept of this red dot, fails in execution and practicality. Will be sending it back...." Read more

"...feels sturdy, people tell me it looks sexy, and I know it performs great after 150 rounds. Will update here if I ever have problems...." Read more

29 customers mention4 positive25 negative

Customers are dissatisfied with the size of the aiming scope sight. They mention that the reticle is too small to use stand alone, the chevron is small without a magnifier, and the illumination is very narrow. Some say that the size is too large to shoot range with out a magnification.

"...The problem is the BDC is so small it is really worthless without a magnifier and one reviewer said even with a 3x magnifier, it was too small...." Read more

"Great idea, well built, quality piece. However, the ACSS BDC reticle is just to small to be used stand alone...." Read more

"...Secondly, the reticle is so small I doubt most people's eyes could actually distinguish a definite space between the chevron and dots, however, I do..." Read more

"...the range between "too faint to see" and "too much illumination" is very narrow...." Read more

Just received the optic today and I am pleased with it so far for the price
4 Stars
Just received the optic today and I am pleased with it so far for the price
Just received the optic today and I am pleased with it so far for the price, but I already have a few complaints. For starters it sits too high or low with the two mounts sent with it to co-whitness with my iron sights, so i am bringing it with me to the gun show this weekend to try an find a QD mount that will put me at the right height (im honestly not mad about it since I already planned on replacing the mount since i have heard from reviews on here and YouTube that people had experienced issues with the provided mounts). Secondly, the reticle is so small I doubt most people's eyes could actually distinguish a definite space between the chevron and dots, however, I do believe that a magnifier mounted behind the optic would help you be able to see the optic definition more clearly as a magnifier will also magnify the reticle itself. I'm going to take it out in the next week or two and run it through its paces shooting a couple hundred rounds up close and then step it out to 400 yards, and if it does well maybe i will attempt to push it to 600 (but doubtfully as my rifle shoots about 3 MOA no matter what ammo I feed it). After my range session I will update my post, then later I will be mounting a magnifier behind it and will update again after use
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

Chad Duprey
5.0 out of 5 stars I have mounted my Holosun red dot with a Vortex 3x magnifier on a flip mount and this ACSS reticle is just as good if not better when magnified
Reviewed in the United States on May 9, 2018
Verified Purchase
I ordered this scope based off a review I saw from Garand Thumb on Youtube. This is a very effective red dot sight combining the ACSS reticle with the benefits of a red dot sight. I brought it to the range and after a few rounds from my AR style rifle she was sighted in perfectly. I have been able to fire 1-1.5 inch groupings from 100 yards consistently. I have had zero issues with fogging on the lenses and the reticle is crystal clear. There is a very slight bluish tint that for me is barely noticeable unless I'm looking for it. The reticle itself is crystal clear unless you crank the brightness up to full at which point I notice a slight blurring or haloing effect. I have mounted my Holosun red dot with a Vortex 3x magnifier on a flip mount and this ACSS reticle is just as good if not better when magnified. For $220 dollars this optic performs above par in my opinion holds it owns with the likes of Aimpoint and EOTech. The only thing I can't comment on is it's durability as I have not put that to the test yet. I can tell you that all my future builds, except long range rifles, will be fit with a Holosun red dot sight. Excellent quality and performance for about 1/4 the cost of it's competitors. The saying is "you get what you pay for" well in this case you get far more than you pay for.
4 people found this helpful
Helpful
 Report
R. Thelen
5.0 out of 5 stars Great Red Dot
Reviewed in the United States on March 18, 2017
Verified Purchase
My first red dot. Gotta say that this thing is very cool. Have not used it at any long distances yet, but where I have it zeroed, it works just fine. The brightness adjustments are easy to use, love the fact that you can add/remove the horseshoe reticle, and the 5,000 hour battery life allows me to keep the device on all the time, and "awakens" the second I grab the rifle. Good job Holosun!

One area of improvement that I will recommend is that the sight should come with a QD mount, but it only is offered with a standard mount that requires a torx key (supplied) to mount it to the firearm. After doing some research and exchanging some emails with Primary Arms, I purchased their QD mount for this sight, which works perfectly. Only $39, which is a deal, considering other good quality QD's are selling from $79 and higher. The QD mount is not advertised on Primary's web site, so you need to send an email if you want to buy one.
12 people found this helpful
Helpful
 Report
Amazon Customer
5.0 out of 5 stars No Amazon, a headline is unnecessary
Reviewed in the United States on January 11, 2019
Verified Purchase
Great sight for a good price. Reticle is crisp and clear, wide range of brightness settings that work from pitch black to middle of the day. The packaging is quality and includes some helpful extras (cleaning cloth, second mount, star key).

I was unsure of the movement-based auto-on functionality but it has always turned on as soon as i even wiggled my rifle.

My only complaint is the sleeve over the box had a large chunk ripped off, but I can assume it was a fluke (and there's no way to tell where/when it happened). There was absolutely no damage to any other piece and I can say I'm highly satisfied.
Helpful
 Report
KS916
4.0 out of 5 stars It's no Aimpoint Micro, but for the price it's a great option!
Reviewed in the United States on October 24, 2016
Verified Purchase
PROS:
- The price.
- Easy to mount.
- ACSS reticle is clear and crisp, provided it is adjusted to suit the ambient light level. If you're in shade shooting into a brighter area or in a bright area shooting at a shaded target, the reticle will be blurry or washed out.
- Compatible with any Aimpoint Micro H-1, T-1, T-2, or H-2 mount.
- Easy to sight-in. I did so at 25 yards and was on the money within 12 shots (4 3-shot groups).

CONS:
- The mount is cheap but seemed stable. Since I wanted a QD system, I ended up getting a La Rue mount. Which is admittedly a little absurd because it cost half what the sight cost.
- At higher brightness settings there is some flaring and blurriness. But when it is appropriately adjusted, there is no issue.
- When looking into the sun there is a red glare on part of the lens.
2 people found this helpful
Helpful
 Report
Micky
5.0 out of 5 stars Perfect for colt style 9mm AR pistol
Reviewed in the United States on October 19, 2016
Verified Purchase
Excellent size/height for my AR pistol. Advanced Combat Sight System (ACSS) works flawlessly on multiple caliber weapons, in a pistol or carbine setup. Matte black looks good (see picture) and I don't mind the oh-so common red mirror-tint you see when looking directly into the front lens. Since Im using it on a home PDW (see picture) I leave it powered on & sleeping when in standby, and turn it off when I take the gun out of the house until I'm ready to shoot (so the frequent movement doesn't drain the battery). Overall: it feels sturdy, people tell me it looks sexy, and I know it performs great after 150 rounds. Will update here if I ever have problems. Let's hope I never have to test the seemingly outstanding warranty.

Tip: The glowing recticle is extremely precise (small, see pictures). The distance BDC dots can bleed & become blurry to the naked eye if the brightness is up too high in contrast to the background, so adjust down accordingly. This also helps save battery.

Also, for best accuracy, be sure to use the correct grain load per ACSS/BDC chart recommendations when sighting and shooting targets at distances farther than that which corresponds with the tip/top of the chevron.
Customer image
Micky
5.0 out of 5 stars Perfect for colt style 9mm AR pistol
Reviewed in the United States on October 19, 2016
Excellent size/height for my AR pistol. Advanced Combat Sight System (ACSS) works flawlessly on multiple caliber weapons, in a pistol or carbine setup. Matte black looks good (see picture) and I don't mind the oh-so common red mirror-tint you see when looking directly into the front lens. Since Im using it on a home PDW (see picture) I leave it powered on & sleeping when in standby, and turn it off when I take the gun out of the house until I'm ready to shoot (so the frequent movement doesn't drain the battery). Overall: it feels sturdy, people tell me it looks sexy, and I know it performs great after 150 rounds. Will update here if I ever have problems. Let's hope I never have to test the seemingly outstanding warranty.

Tip: The glowing recticle is extremely precise (small, see pictures). The distance BDC dots can bleed & become blurry to the naked eye if the brightness is up too high in contrast to the background, so adjust down accordingly. This also helps save battery.

Also, for best accuracy, be sure to use the correct grain load per ACSS/BDC chart recommendations when sighting and shooting targets at distances farther than that which corresponds with the tip/top of the chevron.
Images in this review
Customer image Customer image Customer image Customer image
Customer imageCustomer imageCustomer imageCustomer image
31 people found this helpful
Helpful
 Report