+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Holosun Paralow HS503G Reticle Red Dot Sight

Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
1 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
2 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
3 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
4 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
5 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
6 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
7 of 20 images
Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
8 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
9 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
10 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO3
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
11 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO1
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
12 of 20 images
EDEMO Holosun Paralow HS503G Reticle Red Dot Sight, Exclusive ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO2
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
13 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
14 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
15 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
16 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
17 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
18 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
19 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5
20 of 20 images
Holosun Paralow HS503G Red Dot Sight w/ Illuminated ACSS CQB Reticle, Black, HS503G-ACSS, EDEMO5

Tap Tap to Zoom

Questions & Answers
Do the bullet drop points have a different distances with shorter barrels? Say I am using a 7.5" barrel instead of a 16" barrel. Featured Answer

I called Primary Arms to ask that same question. Since they made the ACSS reticle I thought it made the most sense to call them. They told me I needed to buy the strelok app and chronograph my specific gun/ammo to figure out what yardage to zero in-order for the ACSS to work properly. I wish they would publish the data for us so we don't have to buy a chronograph and ballistic calculators but it is what it is.

by KB, Verified Owner, October 1, 2019
See 8 More Answers
Is this particular sight available with solar backup? Expert Answer

The Holosun HE503CU Elite Paralow 2MOA Green Dot Sight at the link below is solar powered.
https://www.opticsplanet.com/holosun-he503cu-gr-elite.html

by Hunter, Gear Expert, July 1, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
The Primary Arms ACSS Reticle is the ONLY way to go by Kris Davis, September 3, 2021
The Primary Arms ACSS reticle with CQB and BDC may be the best reticle in existence. I was at a gun show a couple years ago and I picked up an M4 I noticed to check out the attached ACOG. It was amazing and I decided to get one. I looked around onlin...
Read More...
3/3 found this helpful
Helpful Positive Review
Holosun with a BDC by Andrew, December 13, 2023
First off, it’s an HS503, it’s what you’d expect from Holosun. The glass is fine, the dot is bright and easy to acquire, and it’s lightweight. The reticle, on the other hand, needs some explanation. First off, you need to have a 3x or better magnifie...
Read More...
1/1 found this helpful
Helpful Positive Review
astigmatism by marz, Verified Owner, October 30, 2017
great sight, in my opinion they could charge more for how good this red dot actually is. the only thing I did not take into account was my astigmatism which made the reticle look awful but realized it was me not the dot.
4/6 found this helpful
Helpful Positive Review
Great red dot! by Curly Fries, February 25, 2019
Great red dot for the money. There's a good range of brightness, and I love the shake awake feature. The acss reticle is a nice touch if you're on the fence between getting a scope or a red dot. The glass is pretty clear and buttons are firm.
6/6 found this helpful
Helpful Positive Review
I have one (2yrs) and ordered another. by JohnL, June 14, 2020
I wrote this review because of negative reviews that are at best "Atypical". I have been using Holo s since they came on the market and they did torture tests on youtube. I have never had an issue with any of them. In Fact I prefer them over my aimpo...
Read More...
36/37 found this helpful
Helpful Positive Review
Combat optic by Sic Semper Tyrannis, Verified Owner, September 2, 2022
I’ve had a lot of time behind this optic. I’ve seen reviews with people saying this optic needs/has to be paired with a magnifier. I have mine paired with a magnifier but I have to disagree. You can easily engage human size targets out to 400 yards w...
Read More...
1/1 found this helpful
Read All 67 Reviews

Product No Longer Available

Unfortunately Holosun Paralow HS503G Reticle Red Dot Sight is not listed by OpticsPlanet.

Product Info for Holosun Paralow HS503G Reticle Red Dot Sight

Most red dot sights aren't of much use from 100+ yards out due to the large dot reticle. The Holosun Paralow HS503G Reticle Red Dot Sight aims to fix that issue. These by Holosun feature a patent-pending ACSS reticle that uses a large chevron which allows the user's eye to pick it up easily for close quarters shooting, but the tip of the chevron acts as a small aiming point at longer distances. No longer do you have to choose between a close range red dot sight or a long range one. Plus, the Holosun Paralow HS503G Reticle Red Dot Sight contains three BDC dots underneath the chevron which allow for a remarkable 600 yards of bullet drop compensation in 7.62 NATO or 5.56 NATO calibers. You'll love the incredibly unique qualities of the Holosun Paralow HS503G Reticle Red Dot Sight, and it's one of the best optic options available for both short-range and long-range engagements.image

Features of Holosun Paralow HS503G Reticle Red Dot Sight

  • 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

Package Contents:

  • Holosun Paralow HS503G Reticle Red Dot Sight

Related Products to Holosun Paralow HS503G Reticle Red Dot Sight

Image of Boyt Harness Harness Handgun Case 4 models Boyt Harness Harness Handgun Case (19) As Low As (Save Up to 35%) $41.99 12% Coupon
Image of Boyt Harness Heart-Shaped Handgun Case with Pockets 8 models Boyt Harness Heart-Shaped Handgun Case with Pockets (24) As Low As (Save Up to 18%) $32.00 12% Coupon
Image of Boyt Harness Signature Series Takedown Canvas Case 6 models Boyt Harness Signature Series Takedown Canvas Case (22) As Low As (Save Up to 30%) $114.79 Up to 14% Coupon
Image of EOTech 510 Series 512-A65 Holographic CQB Weapon Sight made-in-usa-flag 2 models EOTech 512 Holosight - 512.A65 HWS (186) As Low As (Save Up to 15%) $463.99 Blazin' Deal
Image of EOTech OPMOD EXPS2 Holographic Reflex Red Dot Sight EOTech OPMOD EXPS-2 Red Dot Sight (332) List: $769.99 (Save 16%) $649.99 Blazin' Deal
Image of Streamlight TLR-2 Tactical Weapon Flashlight w/ Laser Sight Streamlight TLR-2 Rail Mount Flashlight & Laser Sight (282) List: $697.98 (Save 44%) $389.99 Best Rated
Image of Tipton Best Gun Vise Tipton Best Gun Vise (152) List: $164.99 (Save 39%) $99.99 Best Rated
Image of Wheeler Engineering Crosshair Alignment Level-Level-Level Wheeler Engineering Crosshair Alignment Level-Level-Level (80) List: $21.99 $21.89 Best Rated
Compare (0)
1 item has been added
Add at least two items to compare