Vortex Diamondback 3.5-10x50 SFP BDC AO Rifle Scope
The Vortex Diamondback 3.5–10x50 SFP BDC AO Riflescope is a dependable all-around hunting optic built for clarity, durability, and consistent field performance. Its 3.5–10x magnification range offers flexibility for close to mid-range shots, while the large 50mm objective lens delivers bright, usable images in low-light conditions like dawn and dusk. The second focal plane BDC reticle provides simple, reliable holdover points, and the adjustable objective (AO) helps fine-tune focus for improved target clarity. Built on a rugged 1-inch tube, it’s waterproof, fog-proof, and shockproof for real-world hunting conditions. Simple, tough, and effective, it’s a solid choice for hunters who want dependable performance without unnecessary complexity.
-Nathan (Technical Advisor)
The Vortex Diamondback 3.5–10x50 SFP BDC AO Rifle Scope carries forward the Diamondback reputation as a tough, dependable workhorse built for serious hunters. With excellent low-light capability, brilliant contrast and impressive image sharpness, it delivers reliable performance from the first minutes of dawn to the last light of evening. Its lightweight yet rugged construction ensures consistent accuracy in demanding terrain, giving shooters the confidence to push further. Intuitive to use, durable enough for any hunt and equipped with an adjustable objective for precise parallax correction, the Diamondback is engineered to go the distance. The Dead-Hold® BDC (MOA) reticle provides an effective solution for holdover and windage estimation at varying ranges.
- Magnification 3.5–10x
- Objective Lens Diameter 50 mm
- Focal Plane Second Focal Plane
- Reticle Dead-Hold® BDC (MOA)
- Eye Relief 3.3"
- Field of View 35.8' – 13.5' @ 100 yds
- Turret Style Capped
- Tube Size 1 inch
- Adjustment Graduation 1/4 MOA
- Travel Per Rotation 15 MOA
- Max Elevation Adjustment 65 MOA
- Max Windage Adjustment 65 MOA
- Parallax Setting 100 yds (Adjustable Objective)
- Length 12.5"
- Weight 15.5 oz
- XD™ Optical System – Offers outstanding resolution, exceptional contrast and reduced chromatic aberration.
- Fully Multi-Coated Lenses – Anti-reflective coatings enhance light transmission for superior clarity and brightness.
- Dead-Hold® BDC (MOA) Reticle – Designed for accurate holdover and windage estimation at different ranges.
- Adjustable Objective (AO) – Allows shooters to dial out parallax error for greater long-range precision.
- Fast-Focus Eyepiece – Enables quick reticle focusing for a sharp, clear sight picture.
- Aircraft-Grade Aluminium Construction – Machined from a single piece for maximum durability and structural integrity.
- Low-Glare Matte Black Anodised Finish – Resistant to corrosion and wear, helping reduce reflection in the field.
- Argon Gas Purged & O-Ring Sealed – Ensures waterproof and fogproof performance in extreme weather.
- Shockproof Build – Designed to withstand heavy recoil and demanding use without compromising zero.
Dead-Hold BDC (MOA)
Customized dot design helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern.
Subtension detail for Diamondback 3.5-10x50 riflescope with Dead-Hold BDC MOA reticle.

1. What is the magnification range?
It offers 3.5–10x magnification, suitable for short to mid-range shooting.
2. What size is the objective lens?
It has a 50mm objective lens for strong light gathering in low-light conditions.
3. What does SFP mean?
SFP (Second Focal Plane) means the reticle stays the same size as you zoom, with holdovers calibrated at a specific magnification.
4. What is the BDC reticle?
The BDC (Dead-Hold) reticle provides holdover points to help compensate for bullet drop and wind drift.
5. What is the AO feature?
AO (Adjustable Objective) allows you to fine-tune focus and reduce parallax for clearer target images.
6. Is this scope good for hunting?
Yes, it is designed primarily for hunting and general field use.
7. Is it good in low light?
Yes, the 50mm lens improves brightness during early morning and late evening shooting.
8. Is it durable enough for recoil?
Yes, it is built from aircraft-grade aluminum and designed to handle heavy recoil.
9. Is it waterproof and fog-proof?
Yes, it is fully sealed and nitrogen/argon purged for all-weather reliability.
10. Does it come with a warranty?
Yes, it is backed by Vortex’s lifetime warranty.
- Vortex International VIP 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 – 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 1–2 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.

