Arken Optics 30mm Cantilever Scope Mount 20 MOA Picatinny 1 Piece 2.5" Offset
Rigid one-piece 30mm cantilever mount with built-in 20 MOA incline for extended eye relief and extra elevation adjustment
- 2.5-inch forward offset for improved eye relief on AR-style platforms
- CNC machined from aircraft-grade aluminium for maximum strength and precision
- Rigid and reliable platform designed for demanding shooting conditions
- Compatible with 30mm tube scopes
- Built-in 20 MOA incline to optimise long-range shooting performance
- Lightweight design at just 6.9 oz
- 1.5-inch height for ideal optic alignment
If you need a solid one-piece mount that pushes your scope forward for proper eye relief while giving extra elevation for longer-range shooting, this Arken Optics Precision 20 MOA Picatinny Cantilever Mount with a 2.5-inch offset is built for exactly that.
The 2.5-inch forward offset helps with scope positioning on flat top style or other Picatinny-railed rifles, while the integrated 20 MOA cant preserves more of your scope’s internal elevation adjustment. CNC-machined aluminium keeps weight sensible without feeling flimsy
This is not a standard scope ring set—it’s a forward-offset cantilever mount. That means if your scope sits too far back for comfortable eye relief, this solves that problem without needing awkward rail extensions.
The 20 MOA cant angles the scope slightly downward relative to the rifle, which gives you more upward turret adjustment for longer-distance shooting. Great if you're stretching a centre-fire rifle or precision setup.
Important fitment note: this mount is for 30mm scope tubes only and Picatinny rails only. It is not suitable for 1-inch scopes, 34mm scopes, or 11mm air rifle dovetail rails unless using a suitable adapter.
The 1.5-inch height suits AR-style straight-line stock setups well, but may sit higher than some traditional bolt-action users want.
Arken Optics maintains tight manufacturing tolerances for enhanced stability and performance. For best results, it is recommended that ring screws be torqued no higher than 18 in/lbs, and base screws no higher than 30 in/lbs, unless the optic manufacturer advises otherwise. The Rigid Precision design ensures a secure, rock-solid fit, perfect for demanding precision shooting applications.
Height = 38.1mm
- Model ARP-30 (20 MOA)
- Tube Size 30mm
- Height 1.5 inch
- Weight 6.9 oz
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Cantilever design provides extended forward mounting position for improved eye relief
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Optimised for flat top style platforms, ensuring proper scope placement and balance
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Precision CNC machining delivers consistent fit and finish with tight tolerances
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Robust one-piece construction enhances stability and durability under recoil
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Integrated 20 MOA cant allows for increased elevation adjustment, ideal for long-range shooting
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Matte black anodised finish offers a sleek appearance and added corrosion resistance
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Engineered for rigidity, minimising flex and maintaining zero during use
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Low-profile design ensures compatibility with a variety of scope sizes and rail systems
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Easy installation and torque guidance, with recommended settings to protect your optic and mount
- Arken Optics Rigid Precision 20 MOA Cantilever Mount - 2.5 inch offset.
What scope size fits this mount?
This mount fits 30mm scope tubes only. This refers to the main tube diameter of your scope, not the front objective lens size. It will not fit 1-inch or 34mm scopes.
Will this mount fit a Picatinny rail?
Yes. This mount is designed for standard Picatinny rails and may also fit some Weaver rails, depending on slot dimensions.
Is this mount suitable for flat top rifles?
Yes. The 2.5-inch forward cantilever offset helps position the scope further forward for improved eye relief on flat top rifle setups with Picatinny rails.
Is this scope mount suitable for long-range shooting?
Yes. The built-in 20 MOA cant helps preserve more of your scope’s internal elevation adjustment, making it useful for medium- to long-range setups.
What does a 20 MOA scope mount do?
A 20 MOA mount angles the scope slightly to give additional elevation adjustment, helping when shooting at longer distances.
Can this mount be used on an air rifle?
Only if your air rifle has a Picatinny rail. It will not attach directly to standard 11mm dovetail rails without an adapter.
Is this mount too high for a traditional bolt-action rifle?
It may be, depending on stock design and scope size. At approximately 1.5 inches high, this mount is generally better suited to flat top configurations than low-mounted traditional hunting rifle setups.
Will this fit a 50mm objective scope?
Usually yes, but final clearance depends on your rifle setup, barrel profile, rail height, and scope dimensions.
Is this a one-piece or two-piece scope mount?
This is a one-piece cantilever mount, designed for improved alignment consistency and straightforward installation.
Does a one-piece mount help maintain zero?
A rigid one-piece mount can improve consistency and alignment, especially on Picatinny rail systems.
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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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.