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
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 OpticsĀ® 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 scopeās objective housing
3. How do you install it
It installs by pressing the cap onto the objective bell where it fits securely via a frictionāfit design
4. Is it easy to open while shooting
Yes, the springāloaded hinge allows quick, oneāhanded flipāup access to your lens when youāre 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, itās made from rugged materials designed to withstand outdoor use and rough handling
9. Can it fit nonāVortex 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
Tactical Scope Shipping Policy
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY ā READ MORE: HERE
Note: The above DPD link is to our group partner site Optics Warehouse, with whom we share logistics and stock. Link opens in a new window.
Couriers
We use DPD, Royal Mail, TNT, and UPS courier services for all our UK and international orders. Once your order is dispatched, you will receive an email with your unique tracking number.
In-Store Items
These are items we have in stock and aim to dispatch within 1ā2 working days. During busy periods, this may be delayed slightly. If you'd prefer to collect your item in person, please contact us in advance to arrange. Collection orders must be paid for beforehand.
Pre-Order Items
Pre-order items are typically out-of-stock or in limited supply. Purchasing a pre-order secures your item, and it will be dispatched within 24 hours of restock where possible. Check the product page for estimated restock dates. These dates may change, so staying in touch is advised.
International Delivery & Taxes
If your shipping address is outside the UK, you may incur import duties or taxes upon arrival in your country. These charges are your responsibility. Customs regulations vary, so please check with your local customs office. Some packages may be opened for inspection.
Need Help?
If you need assistance, call us at +44 (0)1803 611895 (Optics Warehouse) or email [email protected].
DPD Shipments & PIN Code Delivery
We have now introduced DPD Pin Code verification for all orders shipped via DPD. You will receive a PIN via email and text.
A valid email and mobile number must be provided at checkout. Emails will come from Riviera House 3PL. Please check spam/junk folders if not received.
Failure to present your PIN to the delivery driver will result in a failed delivery and rescheduling may be required.