Rusan Steel Quick-Release Picatinny & Weaver rings - 40 mm, Height 8mm
The Rusan Steel Quick-Release Picatinny & Weaver Rings (40mm, Height 8mm) are precision-engineered mounts designed to provide a secure, low-profile, and easily detachable platform for 40mm scopes on Picatinny or Weaver rails. Machined from high-strength steel, these rings offer excellent rigidity, recoil resistance, and repeatable zero retention. The 8mm height keeps your optic close to the bore for an optimal cheek weld, while the quick-release mechanism allows for rapid attachment or removal without tools. Perfect for tactical rifles, hunting setups, and long-range precision applications, these rings deliver strength, reliability, and convenience in one professional-grade mounting solution.
-Nathan (Technical Advisor)
- Top Grade European Manufacture
- High Strength Steel Construction for Durability and Accuracy
- Blue Steel Finish Roll off rings secured with quick-release lever + 4 Torx Screws per ring cap
- 8mm height
Height = 28mm
- 40mm Diameter
- Quick-release
- Fits Picatinny/Weaver rails
- Top Grade European Manufacture
- High Strength Steel Construction for Durability and Accuracy
- Blue Steel Finish Roll off rings secured with quick-release lever + 4 Torx Screws per ring cap
- 8mm height
- Rusan Steel Quick-Release Picatinny & Weaver rings - 40 mm
- Torx wrench
1. What scope tube size do these rings fit?
They are designed for 40mm scope tubes.
2. What rails are compatible with these rings?
They fit standard Picatinny or Weaver rails.
3. What does the 8mm height mean?
The 8mm height is measured from the base of the rail to the bottom of the scope tube providing a low-profile setup for better cheek weld and ergonomics.
4. What is the quick-release feature?
The quick-release mechanism allows rapid attachment and removal of your scope while maintaining zero.
5. What material are these rings made from?
They are machined from high-strength steel for maximum rigidity, durability, and recoil resistance.
6. Can these rings support heavy scopes?
Yes, the steel construction supports medium to heavy optics without shifting under recoil.
7. Will these rings affect shooting accuracy?
While they don’t alter the rifle’s mechanical accuracy, they provide a stable and repeatable optic mounting platform.
8. Are these rings compatible with Weaver rails?
Yes, they are compatible with both Picatinny and Weaver rails.
9. What applications are these rings ideal for?
Perfect for hunting rifles, tactical setups, and long-range precision shooting, especially when a low-profile mount is desired.
10. Who should choose these rings?
Shooters looking for a durable, low-profile, quick-release mounting solution for 40mm scopes on Picatinny or Weaver rails.
- 30 Years Warranty
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE
COURIERS
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We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number. We are unable to add delivery notes to your order regarding safe spaces or neighbour deliveries. If you require this service it can be arranged directly with the courier once the parcel is in their network.
IN-STORE ITEMS
These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.
PRE-ORDER ITEMS
These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.
INTERNATIONAL DELIVERY & TAXES
In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.
NEED HELP?
If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
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A NOTE ABOUT DPD SHIPMENTS:
- Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
- If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
- The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
- Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
- Please view the attached slides HERE for further information!
Please note: All clearance calculations are based on mounts with 0 MOA. While MOA can be factored in, actual clearance may vary due to variables that can't always be accurately calculated. If you're considering an MOA mount and are unsure about the required height, we recommend contacting our sales team directly.
Measure the outermost diameter of your scope’s objective bell (including any flare).
Measure the thickness of any scope cover if used. If none, leave as 0.
Measure from the top of the rail to the highest point of the barrel.
We add a little extra clearance to account for real-world variation. Default is +1 mm.
Enter your measurements above to calculate the lowest ring height (base-to-centre) you can realistically use.
(A + 2×B) / 2 − C + TWhere A = objective outer diameter, B = cover thickness, C = rail-to-barrel clearance, T = tolerance.

















