Spuhr ISMS SP-4622C Ø34mm Tube 6 MIL (38 mm High) Gen 3 Cantilever Picatinny Scope Mount

• Cantilever 70 mm/2.76”
• Colour Black Hardcoat Anodized
• Height 38 mm / 1.5"
• Length 140mm / 5.51"
• Weight 246g / 8.7oz
• Quick Release No
• Rail/Type Picatinny
• Tilt 6 MIL/20.6 MOA
• Tube Diameter 34 mm

• Monolithic one‑piece construction - CNC‑machined from a single billet of aerospace‑grade aluminium to eliminate tolerance stacking, flex, and ring misalignment common in multi‑piece mounts.

• High‑rigidity structural geometry - Optimised cross‑section and material distribution provide exceptional torsional and vertical stiffness, maintaining optic alignment under heavy recoil and dynamic loading.

• Hard‑anodised surface treatment - Type III hard anodising delivers excellent abrasion resistance, corrosion protection, and a non‑reflective tactical finish.

• Diagonal ring split design - Improves load distribution around the scope tube while keeping elevation and windage turrets fully accessible, preventing obstruction during adjustment.

• Integrated scope levelling system - Built‑in bubble level allows the shooter to reference rifle cant and optic alignment directly on the mount for precise long‑range shooting.

• Multi‑axis accessory interface -  Machined mounting points on multiple faces of the mount support direct attachment of optical and electronic accessories without adding separate rails.

• Low‑profile accessory mounting - Keeps mounted devices close to the bore axis and centre of mass, preserving rifle balance and minimising parallax and offset errors.

• Precision‑cut recoil lugs and rail interface - Provides repeatable, slip‑free engagement with Picatinny rails for consistent return‑to‑zero performance.

• High‑strength fastener system - Torque‑optimised fasteners maintain clamping force under vibration and recoil, preventing optic movement or zero shift.

• Designed for extreme‑range precision - Engineered to support the mechanical and optical demands of ELR, PRS, and professional long‑range shooting platforms.

• Spuhr ISMS SP-4622C 34mm H38mm 6MIL (20MOA) PIC Gen3 2.76 inch Canitilever Scope Mount
• 10-degree wedge

Why would a shooter choose a mount with built‑in elevation instead of a flat mount?

A mount with built‑in elevation helps preserve the scope’s internal adjustment range for long‑distance shooting. Instead of using most of the scope’s elevation just to reach long range, the mount shifts the optical alignment upward from the start. This allows the scope to operate closer to the center of its adjustment range, which improves tracking consistency.

Does the built‑in elevation affect accuracy at shorter distances?

Not negatively. At shorter distances, the difference is usually small enough that it doesn’t noticeably affect point of impact. The main advantage is gained when shooting at longer ranges where elevation adjustment becomes more critical.

Why is this mount more suitable for long‑range shooting than a flat mount?

Because it allows more usable elevation travel in the optic without needing to push the internal adjustment system to its limits. Scopes tend to track more reliably when they operate closer to the center of their adjustment range. This improves consistency when dialing repeatedly at distance.

How does the cantilever design improve shooting ergonomics?

It allows the optic to sit further forward without needing additional rail space. This helps shooters maintain a natural head position while still achieving correct eye relief. It’s particularly useful on rifles where the receiver rail is short.

Will this mount improve long‑range consistency?

Yes, because it allows the optic to operate in a more efficient part of its adjustment range. When the internal components of a scope are not pushed to their extremes, tracking tends to remain more consistent. This becomes more noticeable as distances increase.

Why would someone choose this over a set of separate rings?

A one‑piece mount removes the risk of misalignment between rings, which can happen even with expensive ring sets. That alignment is critical for long‑range shooting where small errors become more noticeable. The monolithic design ensures consistent positioning every time.

How does the mount influence head position?

The forward offset encourages a more natural head position while still providing correct eye relief. That helps reduce strain during longer shooting sessions. It also improves consistency between shots.

Will this mount help maintain zero over time?

Yes. The rigid construction and consistent clamping pressure help prevent small shifts that can occur with weaker mounting systems. This contributes to long‑term zero stability.

How does it compare to using a rail with built‑in elevation?

Both approaches achieve similar results, but a mount with built‑in elevation offers more flexibility. It allows the shooter to use the same rifle setup with different optics without changing the rail. That makes it more adaptable.

Does the mount improve accuracy or just convenience?

It improves consistency more than raw accuracy. By maintaining better alignment and reducing stress on the scope, it helps ensure that the rifle performs consistently. Over time, that consistency leads to tighter groupings.

How important is torque when installing this mount?

Very important. Uneven torque can create pressure points on the scope tube, which can affect both tracking and durability. Using proper torque helps ensure long‑term stability.

Can the mount handle heavy recoil calibers?

Yes, the one‑piece structure is designed to resist flexing and movement under recoil. Strong construction helps prevent zero shift even with powerful cartridges. This makes it suitable for more demanding applications.

Will the mount maintain zero if the rifle is transported frequently?

Yes. A strong mount with precise rail engagement helps maintain zero even after regular movement. This is especially important for long‑range shooters who rely on consistent accuracy.

How does it affect rifle balance?

The forward offset shifts weight slightly forward, which can improve stability when shooting from a prone position. This can make the rifle feel more stable during long‑range shooting. Small balance improvements can make a noticeable difference.

How does the mount support long‑range performance?

It preserves usable elevation travel and keeps the optic aligned with the rifle. These two factors are essential for long‑distance shooting. Together, they improve consistency and reliability.

Why would someone choose this mount specifically for long‑range use?

Because it combines forward positioning, built‑in elevation, and strong construction. Those three factors directly support long‑range performance. It’s designed for shooters who want consistent results at extended distances.

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

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!