Paralow HS503G Red Dot Sight - ACSS CQB Reticle
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🎁 Holiday & Black Friday Buyer’s Guide 2025
🎁 Holiday & Black Friday Buyer’s Guide 2025
Most in-stock items ship within 3–4 business days.
If an item shows Backorder or Special Order, extra vendor lead time applies.
To ensure delivery before Christmas, place your order by the following dates (includes fulfillment time):
USPS Ground Advantage – Order by Dec 13
USPS Priority Mail – Order by Dec 14
USPS Priority Mail Express – Order by Dec 16
UPS 3-Day Select – Order by Dec 15
UPS 2-Day Air – Order by Dec 18
UPS Next Day Air – Order by Dec 19
International customers: Order by Nov 28 – Dec 5, depending on service and location.
For full vendor lead times and detailed shipping info, read the complete Holiday Buyer’s Guide →
🚚 Shipping Information
🚚 Shipping Information
Most in-stock items ship within 3 business days.
Special order items are typically processed within 14 business days (excluding weekends and holidays).
Custom items may require additional time depending on production schedules.
If you’d like to receive your order sooner, please select an expedited shipping option at checkout.
Some products ship directly from the manufacturer, and an equivalent carrier or service level will be chosen to match your selected shipping speed.
Shipping delays caused by carriers are outside our control, but we’ll always help track updates.
See our Shipping Policy for details.
🔄 Returns & Warranty Support
🔄 Returns & Warranty Support
Returns are accepted within 14 days for items that are unused, unopened, and in original packaging with no damage.
A restocking fee applies, but it may be partially waived if store credit is selected instead of a refund to the original payment method.
Custom builds, sale items, and hazardous goods are final sale.
Warranty Coverage: Manufacturer warranties apply to all standard products. Any defects, malfunctions, or performance issues are handled directly by the manufacturer per their terms.
HR Tactical Innovations covers a Fitment & Functionality Guarantee on all custom or modified items — if a verified production error occurs, we’ll replace the item.
View our Refund Policy for full details.
🌍 International Customers
🌍 International Customers
We ship worldwide to Canada, Mexico, Europe, Asia, and Oceania, including:
🇨🇭 Switzerland • 🇨🇿 Czechia • 🇩🇪 Germany • 🇩🇰 Denmark • 🇪🇸 Spain • 🇫🇮 Finland • 🇫🇷 France • 🇬🇧 United Kingdom • 🇭🇰 Hong Kong SAR • 🇮🇪 Ireland • 🇮🇹 Italy • 🇯🇵 Japan • 🇰🇷 South Korea • 🇲🇾 Malaysia • 🇳🇱 Netherlands • 🇳🇴 Norway • 🇵🇱 Poland • 🇵🇹 Portugal • 🇸🇪 Sweden • 🇸🇬 Singapore • 🇦🇺 Australia • 🇳🇿 New Zealand • 🇦🇪 UAE and more.
Transit averages 2–4 weeks depending on customs clearance. We are not responsible for customs delays. Reduced transit times are only available through expedited shipping options.
Import duties, VAT, and taxes are not included in your order total and must be paid by the recipient.
If a package is rejected, unclaimed, or returned due to unpaid duties, an incorrect address, or failure to collect, it will be handled under our Refund Policy. Shipping costs are non-refundable in these cases.
Pressurized or restricted items ship ground only where permitted.
Questions? Contact ops@hrtacticalin.com before checkout.
🎖️ GovX Military, First Responder & Teacher Discount
🎖️ GovX Military, First Responder & Teacher Discount
Description
Description
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.
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