Vortex Defender 40mm Objective Flip Up Cap
"The Vortex Defender O-40 flip-up cap is a simple but highly effective accessory for protecting your riflescope in the field. Designed to fit 40mm objective lenses, it helps guard against dust, rain, and scratches while maintaining a secure and low-profile fit. The spring-loaded mechanism flips open instantly, ensuring it never interferes with your sight picture. If you want a dependable way to keep your optics protected and ready for use, the O-40 is an excellent choice." - Soph
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Vortex Defender 40mm Objective Flip-Up Cap
The Vortex Defender 40mm Flip-up Cap (Objective) is the last flip cap you will ever need!
The Vortex Defender 40mm Objective Flip-Up is virtually indestructible, this cap will fit snugly on nearly all Vortex Optics® and other rifle scopes which the correct outside diameter measurements such as Schmidt & Bender PM II scopes, Nightforces to name but a couple.
The Vortex Defender Flip-Up features a snap flat spring that will keep your line of sight unobstructed.
Vortex Defender 40mm Objective Flip-Up Cap Specifications
- Objective 40 : - Outside diameter: 45.5-48.5 mm | 1.8-1.9 inches
Vortex Defender 40mm Objective Flip Up Cap Features
- Objective 40 : - Outside diameter: 45.5-48.5 mm | 1.8-1.9 inches
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Vortex Defender 40mm Objective Flip-Up Cap
1. What does the Defender 40mm flip cap do
It protects your 40mm objective lens from dirt, debris, moisture, and impact when not in use
2. What size scopes is it compatible with
It is designed to fit scopes with a 40mm objective lens diameter, but for best results check the outside diameter of your scope’s objective housing
3. How do you install it
It installs by pressing the cap onto the objective bell where it fits securely via a friction‑fit design
4. Is it easy to open while shooting
Yes, the spring‑loaded hinge allows quick, one‑handed flip‑up access to your lens when you’re ready to shoot
5. Will it stay closed during transport
Yes, it snaps securely closed, preventing it from opening unintentionally during movement
6. Does it interfere with my view when open
No, once flipped up it stays low and out of the way, preserving a clear sight picture
7. Will it protect against weather elements
Yes, it helps shield the lens from moisture and environmental elements like rain and dust
8. Is it durable
Yes, it’s made from rugged materials designed to withstand outdoor use and rough handling
9. Can it fit non‑Vortex scopes
It can fit other optic brands with similar 40mm objective housing internal diameters, but checking measurements is recommended
10. What warranty does it come with
It is covered by the Vortex VIP Lifetime Warranty, which is unlimited, unconditional, and transferable
- Vortex VIP Lifetime 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!