Holosun Paralow HS503G Red Dot Sight - ACSS CQB Reticle

SKU: HS503G-ACSS
MPN: HS503G-ACSS
Manufactured by Holosun
43 Reviews

$219.99

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$219.99

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Details

Exclusive to PrimaryArms.com and Primary Arms authorized dealers.

Primary Arms and Holosun have combined forces to bring you the power of the patent pending ACSS® CQB 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.
   
Using "zero" ranges of 25, 50, or 100 yards, the ACSS BDC is compatible with the following calibers:
  • 5.56 NATO / 5.45x39 from 100 to 600 yards
  • 300 BLK / 7.62x39 from 50 to 450 yards
  • 12 gauge 1 oz. slug from 25 to 150 yards
  • 7.62x54R from 100 to 600 yards
  • 7.62 NATO / .308 Win from 100 to 600 yards
  • 300 BLK 220 gr subsonic from 50 to 150 yards
  • .22LR 40 gr from 50 to 175 yards
  • 9mm carbine 115gr from 25 to 200 yards

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. A CQB 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.

Specifications

Battery TypeCR2032 3V Lithium Coin
BrandHolosun
Brightness10 Settings
Click Value1/2 MOA
FinishHardcoat Anodized
Manufacturer.Holosun
MaterialAluminum - 6061-T6
Night Vision CompatibleNight Vision Compatible
ReticleExclusive ACSS CQB
Reticle ColorRed
SizeMicrodots
WarrantyLifetime
Weight4.87 Oz
  • HS503G-ACSS overview with Dimitri Mikroulis
  • HS503G Red Dot ACSS by SuperSetCA
  • ACSS CQB micro explained by Dimitri Mikroulis
  • Holosun 503G Review by MrGunsNGear
  • Holosun ACSS Red Dot Review by Sootch00
  • CountryMash pushes the Holosun ACSS to 500 yards

Best red dot to date

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The best red dot I’ve used to date. For the price you cannot beat this. The reticle is very useful and easy to use helping me to hit plates out to 600 yards easily with an mk18

Awesome red dot

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Best red dot out there regardless of price. I would buy it for all of my guns that currently have a red dot. Pair it with a magnifier and this little red dot beats out most lpvo. Easy to use. Illuminations works very well during the day. I would highly recommend.

I was very sceptical.

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I was very sceptical about this optic as I had never heard of it before. I took a chance and so far am very pleased. It is as advertised. I have it setting on an AK and work very well on it. It would be nice if the Chevron was a bit larger and the front lens set slightly farther in to protect it.

Great value and performance

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The worst thing about the HS503G is that it makes me want to replace my T1 and H1 Aimpoints. The CQB horseshoe is fast at CQB distances with varying light, backgrounds and target colors - easier than finding a dot. I was wrong about writing the horseshoe off. I find the chevron superior to the dot as well when ranging out beyond 50 yards.

Another win for Dimitri and Primary Arms: ACSS ftw’

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Pros:
<br>Lightweight
<br>Solid Construction
<br>Includes two bases/mounts
<br>ACSS reticle!!!!
<br>Inexpensive
<br>
<br>Cons:
<br>ACSS reticle is a little small, but what can you expect, it’s a micro red dot after all.

Great sight

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This is a great sight for the money. I have purchased two and will purchase more down the road. Works especially good when paired with a magnifier.

Awesome with a magnifier

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This sight is awesome! I have some astigmatism so most red dots are fuzzy to me. Even the expensive brands like aimpoint look like a star burst. This sight is much easier to see when paired with a 3x magnifier. The reticle is very small without the magnifier. If you buy this you NEED a 3x magnifier. Thanks PA!

ACSS Red Dot, thumbs up!

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I finally got to use my new Holosun with ACSS, after a long wait. When I got it, I was convinced i wasn't going to like it because of the reticle being so small. But at the range, all that went away, and it really proved to be a great red dot. I had no problems sighting with it, and even though a magnifier would make this top notch for distance (in its class of course), it wasn't at all necessary for 100 meters or less.
<br>Also, I had no problems seeing it in the full sun, with the setting on 4 or 5. Great optic, and I can't wait to put a magnifier behind it. Primary Arms delivers as always. (And Holosun, gotta give them their props too)

Not for eyes with an astigmatism

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If you have an astigmatism then this optic is not for you... If not, it is a really nice little red dot. I have an astigmatism and never really had an issue with a red dot before, maybe a little splaying but never enough to make me not accurate. Initially looking into this optic, my eye just made it a blurry mess. I thought it was a bad optic until i looked at it through a magnifier and it was crisp and excellent. Flip the magnifier and instantly blurry. Keep this in mind if you buy this optic, it may be your eyes that are the issue.

Great value, great function

by

Everything works as advertised, and this unit is a great value. I had never used a red dot before, and it took my eyes a few minutes to adjust.
<br>The size of the chevron is a bit of a double edged sword. It's pretty tiny, which makes it very accurate, but hard to see the details of unless you're sitting perfectly still.
<br>In the end, I'm shooting tight groups out to 100yrds with no magnification. It holds zero, has a light setting for every condition, doesn't blur when you turn the light up, and is very easy to adjust. For this price, you couldn't ask for much more.

The best reasonably priced red dot.

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I have two of these now and like them a lot; one using the supplied mount and the other using a Holosun absolute co-witness mount on an AR15. No issues with either mount. My only criticism (and it's not really one) is that the reticle is so fine (1moa) that it's not very useful at 100+ yards. Problem solved with a flip-to-side magnifier. Will probably buy more of these in the future.

Holosun NEEDS to check on their mount screw quality!

by

The red dot sight itself is great, but the mount is terrible. First range trip with the sight saw the screw connecting the mount to the rail snap right in half. It was properly torqued with blue loctite. I then used the screw from the second mount that comes in the box figuring this was a freak occurrence, torqued with blue loctite. I let it cure, then I come back to it a week later, and just the force of charging the rifle snapped this second mount screw (before I fired any shots). Very disappointed in the mounts, particularly the screws, that ship with this product.

Quality Control Sucks

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I just received this today and nothing worked as it should. The chevron was blurry and there were two lines of dots very blurry and the horseshoe would not come on. It seems there is no Quality Control thru Primary Arms and they are sending out goods made in China without checking them for function. I'm sending it back and requesting that the new one has a note in the box saying it was functioning properly. The box it came in had no seals on it, so it should not be too much of a problem to open them and make sure they work before sending them out.
<br>
<br>From PA: Although this is branded Holosun, it has our reticle so we do check 100% of them. The horseshoe comes on separately and you will find instructions in the manual. Or give us a call. We want you to be 100% happy with the sight.

Exceptional value!

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I own several of these sights and all have performed exceptionally well. Just ordered another one one sale. Glass is clear, reticle is sharp and the hardware is rugged. AR's, SBR's, Shotguns... loving a quality optic that's affordable enough that I can have the same sights on multiple guns. Thanks PA!

Don't buy!

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Over the last several months I have ordered 10 of these scopes.
<br>6 of the ten scopes have not had the horseshoe in the reticle.
<br>I think I will be sticking with the primary arms brand from now on.
<br>
<br>From PA: Although this is branded Holosun, it has our reticle so we do check 100% of them. The horseshoe comes on separately and you will find instructions in the manual. Or give us a call. We want you to be 100% happy with the sight.

Love it.

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The micro chevron reticle is quite small, which is a benefit as it provides extra precision. I'm using it with a flip-out magnifier on an AR9 and it works great. I like how many levels of brightness this red dot has, and the fact that it has motion sensing so you can basically leave it on all the time.

Hands down best tactical sight for the money

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Did a great deal of reading and YouTube research before going with this optic. I'm candidly thrilled with the capability of precision. I'm using it without the magnifier and shooting 1 MOA dependably. And yes, the reticle is small, but very usable. Great battery life.

Great Red Dot! (but not great windage/elevation turrets)

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GOOD<br>- ACSS reticle in a red dot is basically the best thing ever. This reticle is perfect. In fact, I hope Aimpoint/Trijicon puts this in their small red dots. Combined w/ a magnifier, this is a seriously great carbine optic<br>- Battery life - I've had mine on for over 7 months now (with the horseshoe on for most of that). No noticeable dimming. Seems to be as advertised.<br>- Nice mount - Screw requires a T10 torx, but it is very repeatable and holds zero. Taken it off and put it back on more than 20 times and it stays true.<br>- Bright day daytime visible<br><br>BAD<br>- Squishy wind & elev. YMMV, but my elev knob in particular has almost no positive clicks as it is turned. It's usable, it holds zero, and adjustments are 1/2 MOA. However, it is very squishy and sometimes there is no click at all. This is not a deal killer by any means, but this is where the price point shows, and is also why I didn't give the HS503G 5 stars.<br>- No retention for windage/elevation caps. These are easy to lose.

Initial issues

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Initially very excited about this optic. Clarity was great and more crisp than other red dots I own. However with only 200 rounds of 556 something must have shaken a circuit loose in the optic because it is no longer functioning. A battery change did not fix the problem. Sent it back to PA hoping I just got a dud unit. Hopefully a more positive review will follow with the replacement unit.

Buy it!!! You will be totally satisfied!!!

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Wow!! Simply awesome. Hard to believe the couple of poor reviews. Mine is much better that what I expected for $220. I'm sure there are a few bad ones but Primary Arms will fix that in a hurry so its hard to believe.

Exceeded my Expectations

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Pros<br>- Stands up to hard abuse.<br>- Horseshoe makes a night and day difference for CQB target acquisition<br>- Looks great through Night Vision<br>- Works great for 5.56 and .308. Works even better for .300 BO<br>Cons<br>-Slight orange glare if the sun hits it just right while a witch is performing a spell to try and through you off your game<br><br>If you're thinking about spending money on an Aimpoint, Trijicon, or Eotech, then don't. You're reading this review because you're having second thoughts about spending that much money on an optic, so buy this Holosun instead. The glass and reticle are incredibly clear. The horseshoe does a better job for CQB than Eotech, the ACSS reticle does as good of a job as a Trijiconfor reaching out, and the battery life is on par with an aimpoint. If you're worried about ruggedness, then don't. This sight has been run through the gauntlet and the dings and dents I have put in it have not caused it to lose zero once or not turn on.

Sold my MROs and Aimpoints

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While this is a budget friendly optic, the build quality is exceptional for the price point. I beat up my optics by throwing them in my bags, accidently dropping my firearms, tossing multiple firearms and items in my bags. I travel to and from indoor and outdoor ranges in temperatures ranging from 10f to 105f and not once during my year of ownership has my original 50/200 zero strayed or been lost on any of my Holosun optics. In my year of ownership, I have not yet needed to change my battery.
<br>
<br>The lens objective is 20mm. The glass is clear with little to no blue/green tint and handles sun glare extremely well during my bright outdoor shooting adventures. The reticle brightness even goes plenty bright to shoot outdoors in the bright sun during any time of the day. I seriously have no complaints on how it handles the sun. Both (to my eyes) seem to be a true 1x for magnification.
<br>
<br>Seriously, I'm a huge fan of Holosun and sold my Trijicon MROs and Aimpoint's for these.

Update to earlier post - 11/15/2016 4:25 pm

by

Bought two of these Sights
<br>1. Put one on a DP-12 shotgun. The ring and chevron are perfect for this weapon. Groups of 1" @ 25ys (slugs).
<br>2. 2nd sight is on a .300 BO pistol. I did add the following :
<br>--Primary Arms Advanced 3X Long Eye Relief Magnifier, Black PA3XLER-AD. It is functional as close as 15ft. 100yds is unbelievably clear! I'm not a great shot, but my normal group at 50- 1/2", and 100- 1.5".
<br>--Primary Arms Quick Detachable Flip To Side Mounts - Standard Height, Black PAQDMQF-01. This is NOT "slap to the side" mount, but I don't need that. It is "move to the side" and that works for me.

GREAT OPTIC GREAT PRICE GREAT SERVICE = HAPPY

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Couldn't be happier very nice optic nice features love the chevron priced just right... have a PA 6X Magnifier with QD mount sighted in at 100yds 1/2 moa grouping. Touchin 2in plates at 200yds in no time . Primary Arms customer service is amazing will be coming back !

Mount broke after two shots

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So far the site works great. Fit and finish on par with my T1 and T2. The red dots crispness is as good if not better than the T2 (which is improved over the T1) and much better than the eotech that this sight is replacing. If it proves to be as durable as the aimpoint then it will be a great sight for years to come.
<br>Now the one big negative ......the mount. It looks great, fits great, but broke after two shots on a 300BLkout. Took two sight in shots, then reached up to remove the elevation cap and the sight fell off the gun into my hand. The screw broke off half way thru the threads in the base of the mount. I used and FAT wrench to torque it to about 20-25in/lbs and used blu 242 thread locker on install. SO needless to say I am extremely disappointed in the mount. Do yourself a favor and order a LaRue, Midwest or American Defense mount when you order this sight and you won't waste a trip to the range.
<br>5 stars for the red dot and 1 star for the mount.