Vector Optics 34mm Offset Bubble Level Anti Cant Gen II
The Vector Optics 34mm Offset Bubble Level Gen II is a slim, lightweight accessory designed for precision shooting.
It features a side-mounted bubble level for better visibility without disrupting your shooting position.
Made from durable 6061-T6 aluminum alloy with a matte black finish, it ensures long-lasting use and protection.
Easy to install with the included hex key, it fits seamlessly on 34mm riflescopes, enhancing accuracy while adding minimal weight to your setup
The Vector Optics 34mm Offset Bubble Level Gen II is a great tool for shooters who want to improve their accuracy. It has a slim design that fits easily on 34mm riflescopes without adding any extra weight. The bubble level is positioned on the side of the ring, so you can see it better without having to change your shooting position.
A bubble level helps you keep the rifle perfectly upright (no side tilt or “cant”) when taking a shot. Even a few degrees of cant can shift your point of impact left or right—especially noticeable at longer ranges. The level ensures your scope’s reticle is aligned with gravity, so your windage and elevation adjustments stay true.
It's easy to install, thanks to the hex key included in the package. Whether you're a professional shooter or just enjoy shooting as a hobby, you'll find the installation process quick and simple.
Made from strong 6061-T6 aluminum alloy, this bubble level is built to last. The matte black finish not only looks good but also helps protect against wear and tear.
With a diameter of 34 mm and a length of 64 mm (2.5 inches), it fits a variety of riflescopes perfectly. It weighs only 19 grams (0.67 ounces), so it won’t make your setup heavy.
In the box, you'll find the hex key needed for installation. This makes it easy to add the Vector Optics 34mm Offset Bubble Level Gen II to your gear. It helps keep your scope perfectly aligned for every shot, whether you're competing or hunting.
- Diameter 34 mm
- Length 64 mm / 2.5 in
- Material 6061-T6 Aluminum Alloy
- Finish Matte Black
- Weight 19 g / 0.67 oz
- Items in the Package Hex Key.
- Bubble Level with Slim Profile Design, Fits 34mm Riflescopes without Adding Bulk
- Positioned on the Side of the Ring, Better Visibility, No Need to Compromise Cheek Weld
- Easy Installation: Including a Hex Key for Quick and Hassle-free Installation
- Made from Rugged 6061-T6 Aluminum Alloy, Durable Construction for Long-lasting Use
- Vector Optics 34mm Offset Bubble Level Gen II
- Hex key
Q: What is a bubble level (anti-cant device) and why use one?
A bubble level helps you keep the rifle perfectly upright (no side tilt or “cant”) when taking a shot. Even a few degrees of cant can shift your point of impact left or right—especially noticeable at longer ranges. The level ensures your scope’s reticle is aligned with gravity, so your windage and elevation adjustments stay true.
Q: How does canting the rifle affect accuracy?
When the rifle is tilted, the bullet’s trajectory arcs diagonally relative to your reticle. For example, a slight right cant causes the shot to hit low and right. The further the target, the more the error multiplies. A level eliminates this variable.
Q: Where should a bubble level be mounted?
Most shooters mount it:
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On the scope tube (between turret and ring) for constant visibility.
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On the Picatinny rail or mount if there’s limited scope clearance.
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For precision shooting, a fold-out or offset level visible through the sight picture is preferred.
Q: Are all bubble levels the same?
No.
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Tube-mounted levels: Common and compact.
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Fold-out / flip levels: Swing into view when needed.
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Integrated mount levels: Built into the ring or rail for clean setup.
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Precision levels: Oil-filled, high visibility, better for long-range work.
Cheaper models work fine for plinking, but for dialed-in zeroing and long-range precision, choose a rigid, high-visibility level with precise calibration.
Q: Should I use one on an air rifle or rimfire setup?
Yes—especially if your scope has high magnification or you shoot at varying distances. Even at 30–50 m, cant error can mean missing small targets.
Q: How do I install and align a bubble level?
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Level the rifle using a bench rest or spirit level on the action.
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Level the scope reticle (horizontal crosshair).
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Attach the bubble level and adjust until it reads true when both rifle and reticle are level.
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Tighten evenly and verify after first few shots.
Q: Are there right- or left-hand models?
Some flip-out designs are reversible or come in left/right versions to keep visibility clear depending on shooting side or bolt handle position.
Q: Is it worth upgrading to an illuminated or precision-machined level?
If you shoot in low light or at extended ranges (e.g., PRS, long-range, FAC air rifle, or centrefire), yes—better build and clarity help keep focus on the shot rather than straining to see the bubble.
- Vector optics 5 year 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.
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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.

