American Defence Vertical Ring Set for ADM Recon or Scout Style Mounts - 40mm Black

The American Defense 40mm Vertical Ring Set is a replacement ring kit designed for ADM Recon and Scout-style scope mounts. It lets you mount 40mm tube optics or swap your existing ring size without replacing the whole mount.
It’s used to adapt or replace the scope rings on an ADM Recon or Scout QD base. This is especially useful if you’re changing optics but want to keep your existing ADM mount system.
It is compatible with ADM Recon and ADM Scout series mounts, making it a direct fit for those modular mounting systems.
This version is designed for 40mm scope tubes, which are common in high-end precision and long-range rifle optics.
The rings are precision-machined from 6061-T6 aluminium, offering a strong but lightweight construction suitable for repeated recoil use.
It uses a Type III hardcoat anodized finish in black, which helps protect against corrosion, scratches, and general field wear.
No. This is only the vertical ring set. You still need a compatible ADM Recon or Scout base to complete the mounting system.
Yes. ADM rings are designed for magnum and precision rifle use, with a rigid design intended to maintain zero under recoil.
Yes. One of the main advantages of the ADM system is that you can swap ring sizes (e.g. 30mm, 34mm, 35mm, 40mm) without replacing the entire mount.
Most people buy this when they change optics but want to keep their existing ADM base. It’s a cost-effective way to reconfigure your setup without starting from scratch.
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:
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.
Enter your measurements above to calculate the lowest ring height (base-to-centre) you can realistically use.
(A + 2×B) / 2 − C + T