Spuhr ISMS SP-3622C Ø30mm Tube 6 MIL (38 mm High) Gen 3 Cantilever Picatinny Scope Mount

SKU#SP-3622C Spuhr

Spuhr ISMS SP-3622C Ø30mm Tube 6 MIL (38 mm High) Gen 3 Cantilever Picatinny Scope Mount

Name: Spuhr ISMS SP-3622C Ø30mm Tube 6 MIL (38 mm High) Gen 3 Cantilever Picatinny Scope Mount
Brand: Spuhr
Price: 349.99 GBP
Availability: OutOfStock

Available soon Notify me when back in stock

The Spuhr ISMS SP-3622C Gen 3 Cantilever Scope Mount is a precision-engineered mounting solution built for outstanding stability, accuracy, and repeatable performance. Featuring a single-piece billet-machined aluminium construction, Ø30mm rings, 6 MIL cant, and a 38mm ring height, it provides a rigid platform for long-range shooting. An integrated levelling system, diagonally split rings, and multiple accessory interfaces enhance versatility, while the hard-anodised finish delivers exceptional durability for tactical, competition, and field applications.

VIEW PRODUCT INFO / SPECS

Whilst we aim to dispatch in-stock items within 1 working day, please be aware that during busy periods dispatch of in-stock items may be delayed by up to 2 working days. Authorised UK Retailer

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OBSIDIAN REWARDS

“The Spuhr 30mm cantilever mount (6 MIL) offers both flexibility and precision for medium-height optics. Its robust one-piece design ensures stable zero and repeatable mounting, while the cantilever reach optimizes eye relief and shooting comfort. Perfect for precision rifles or versatile field setups.”

Thomas, Sales and Product Specialist Accomplished HFT shooter offering optics and trade-in advice. Practical guidance based on years of competitive shooting.

Product Information FIND OUT MORE

DESCRIPTION

The Spuhr ISMS (Ideal Scope Mount System) is a high-performance mounting solution engineered for shooters who demand unmatched stability, precision, and modular versatility. Its single-piece, billet-machined aluminium construction provides exceptional rigidity, virtually eliminating flex under recoil and ensuring repeatable zero for long-range, tactical, and competition applications.

The system’s diagonally split rings give unobstructed access to elevation and windage turrets, allowing fast and precise adjustments without interference. An integrated levelling system and alignment wedge ensure the optic is perfectly level during setup, critical for extreme-range accuracy and consistent shot placement.

Multiple interface points along the mount allow secure attachment of a wide range of accessories, from lasers and rangefinders to backup optics and night-vision devices, without affecting rifle balance or ergonomics. Machined from aerospace-grade aluminium and finished with hard-anodised coating, the ISMS offers exceptional durability, corrosion resistance, and mechanical integrity under heavy recoil and field conditions.

With its combination of precision machining, modular functionality, and rock-solid strength, the Spuhr ISMS is designed to elevate any rifle platform, providing a foundation for accurate, repeatable, and adaptable long-range performance.

Ring Height - 38mm

SPECS

Cantilever 70 mm/2.76”
Color Black Hardcoat Anodized
Height 38 mm
Quick Release No
Rail/Type Picatinny
Tilt 6 MIL/20.6 MOA
Tube Diameter 30 mm

FEATURES

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.

WHAT'S IN THE BOX

Spuhr Cantilever Mount Ø30 H38mm/1.5" 6MIL PIC Gen3

FREQUENTLY ASKED QUESTION(S)

How does built-in cant influence usable elevation travel in precision shooting?

Integrated cant shifts the scope’s mechanical zero lower within its adjustment range, allowing more upward elevation travel for long-distance shooting. This keeps the erector assembly operating closer to its optical center where mechanical tracking tends to be more consistent.

Does cant improve erector spring stability during large elevation adjustments?

Operating closer to the mechanical center reduces uneven spring compression inside the erector system. This helps maintain more uniform tracking resistance and reduces the likelihood of inconsistent adjustment response.

Can cant reduce internal optical distortion at extreme adjustment ranges?

Keeping adjustments closer to the optical center reduces the need for the internal lenses to operate near their edges. This can reduce minor aberrations and maintain consistent image sharpness across the field of view.

How does ring alignment affect scope tracking precision?

Precise ring alignment prevents torsional stress from being transferred into the scope tube. Minimizing stress allows the erector assembly to move smoothly and maintain consistent tracking behavior.

Can uneven torque create alignment errors in the mount?

Uneven torque can introduce slight angular misalignment between the rings and scope tube. This misalignment can cause localized compression and increase resistance in the erector mechanism.

Does mount placement influence rifle balance and recoil control?

Moving the mount forward shifts the rifle’s center of mass slightly toward the muzzle. This can change how recoil impulse is transmitted through the shooting position.

How does the mount behave under rapid temperature changes?

The mount expands and contracts uniformly due to its monolithic construction. This preserves ring alignment and prevents differential stress on the scope tube.

Can rail imperfections affect mount alignment?

Minor surface irregularities are usually bridged by the mount's rigid base. Significant dimensional deviations can introduce tilt that affects optical axis alignment.

How does ring spacing influence scope tube stress?

Wider ring spacing distributes recoil forces across a larger portion of the scope tube. This reduces localized bending stress near the erector housing.

Can excessive torque affect optical performance?

Over-tightening can slightly deform the scope tube and alter the internal alignment of optical components. This may increase friction in the erector system and affect tracking consistency.

How does the mount resist scope tube slippage under recoil?

Even clamping pressure creates uniform friction around the tube circumference. This prevents axial movement even during high recoil impulse events.

Does repeated recoil affect mount rigidity over time?

Material fatigue is minimal within normal operating conditions due to the mount’s structural stiffness. Proper torque maintenance ensures long-term rigidity.

Can improper installation affect long-range precision?

Small angular misalignments at the mount level translate into larger point-of-impact deviations at long distances. Careful installation minimizes cumulative alignment error.

What installation error most commonly affects tracking accuracy?

Uneven ring torque is the most common cause of internal scope stress. This stress can increase erector friction and produce inconsistent adjustment response.

DELIVERY & RETURNS

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!

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