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SKU#SP-4616 Spuhr
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Spuhr ISMS SP-4616 Ø34mm Tube 6 MIL (38 mm High) Cantilever Picatinny Scope Mount

1 in stock
Price shown excludes VAT. The applicable VAT rate for your delivery country will be calculated and added at checkout.

"The Spuhr ISMS 34mm cantilever mount with 6 MIL provides the perfect balance of rise and offset for tactical and PRS applications. Its one-piece construction offers unmatched rigidity and repeatable zero, while the cantilever design keeps your optic in the ideal shooting position. A premium choice for shooters who demand accuracy and durability." - Thomas.

 

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images/assets/pdp-refresh/delivery-clock.svg We aim to dispatch in-stock items to our Ireland-based Logistics Warehouse for EU dispatch within 1-3 working days. images/assets/pdp-refresh/UK-retailer.svg Authorised UK Retailer
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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.

 
SPECS
Spuhr ISMS SP-4616 34mm High (38mm) 0 MOA Cantilever Picatinny Mount

Picatinny mount for use on AR10 rifles

Rings: 34 mm
Tilt: 6 MIL/20.6 MOA
Height: 38 mm/1.5”
Length: 150 mm/5.9”
Weight: 252 g/8.9 oz
Interfaces: 8 sets
EAN: 7340150700331

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.
FREQUENTLY ASKED QUESTION(S)

How does built-in elevation cant affect mechanical zero optimization?

Integrated cant shifts the optic’s internal adjustment range upward relative to the bore, allowing the erector system to operate closer to its optical center when zeroed at longer distances. This reduces internal spring tension imbalance.

Does MOA/MIL improve tracking consistency during elevation adjustments?

When the erector assembly operates closer to its mechanical center, adjustment tracking tends to remain more consistent because the springs apply more uniform pressure across the adjustment range.

Can MOA/MIL reduce optical distortion at long distances?

Keeping the erector system near its optical center reduces lens edge usage, which can slightly improve image clarity and reduce aberrations during extreme elevation adjustments.

Does forward offset improve shooting ergonomics?

Forward offset allows proper eye relief on rifles with short receiver rails while maintaining a natural head position and consistent cheek weld.

How does the mount handle uneven rail contact surfaces?

The rigid base bridges minor surface irregularities across multiple rail slots, helping maintain alignment even if individual slots are slightly imperfect.

Does ring spacing influence scope durability?

Wider ring spacing distributes recoil forces more evenly along the scope tube and reduces localized stress near the erector housing.

Can mounting position influence elevation travel usage?

Moving the mount forward or backward does not change total elevation travel but can affect shooter comfort and consistency, indirectly influencing long-range precision.

How does torque consistency affect alignment?

Uniform torque across mounting screws ensures even clamping pressure and prevents subtle tilting of the mount body.

Can repeated recoil cycles loosen mounting screws?

Proper torque and screw coatings minimize loosening, but periodic inspection is recommended.

Does the mount maintain alignment after temperature changes?

Uniform expansion across the mount body maintains consistent ring alignment under varying environmental conditions.

How does the mount prevent scope tube slippage?

High friction ring surfaces combined with even torque distribution prevent axial movement of the scope under recoil.

Can over-tightening affect scope tracking?

Excessive ring compression can distort the scope tube and potentially affect erector movement and tracking accuracy.

How does ring alignment influence optical performance?

Precise alignment prevents internal stress that could shift lenses slightly and degrade image quality or tracking precision.

What installation issue most often affects long-range performance?

The most common issue is uneven ring torque which can introduce scope tube stress and reduce tracking consistency.

DELIVERY & RETURNS
Shipping to Europe

Delivery costs & estimated arrival

Find your country below for the delivery charge and how long your order should take to reach you. All orders ship with FedEx. Estimates are in working days and exclude weekends and public holidays.

Country Up to 2kg 2kg – 30kg Estimated delivery
Order under €350 Order €350 & over Order under €350 Order €350 & over
Austria€11.95€26.95€26.95€26.955-7 working days
Belgium€8.95€14.95€14.95€14.954-6 working days
Bulgaria€11.95€31.95€31.95€31.957-9 working days
Croatia€11.95€31.95€31.95€31.956-8 working days
Cyprus€14.95€89.95€89.95€89.95Contact us
Czechia€10.95€21.95€21.95€21.955-7 working days
Denmark€10.95€21.95€21.95€21.954-6 working days
Estonia€11.95€31.95€31.95€31.956-8 working days
Finland€11.95€26.95€26.95€26.955-7 working days
France€10.95€21.95€21.95€21.954-6 working days
Germany€8.95€14.95€14.95€14.955-7 working days
Greece€11.95€31.95€31.95€31.958-10 working days
Hungary€11.95€31.95€31.95€31.955-7 working days
Ireland€6.95€6.95€8.95€8.952-4 working days
Italy€10.95€21.95€21.95€21.955-7 working days
Latvia€11.95€31.95€31.95€31.956-8 working days
Lithuania€11.95€31.95€31.95€31.956-8 working days
Luxembourg€11.95€31.95€31.95€31.955-7 working days
Malta€14.95€89.95€89.95€89.95Contact us
Monaco€10.95€21.95€21.95€21.954-6 working days
Poland€10.95€21.95€21.95€21.955-7 working days
Romania€11.95€31.95€31.95€31.956-8 working days
Slovakia€11.95€31.95€31.95€31.955-7 working days
Slovenia€11.95€31.95€31.95€31.956-8 working days
Spain€11.95€26.95€26.95€26.955-7 working days
Sweden€11.95€26.95€26.95€26.955-7 working days

Returns & withdrawal

Which option you use depends on why you are sending the item back.

Changed your mind?

You have 14 days from receiving your order to withdraw from your purchase. Use our Withdrawal from Contract form to tell us. It is the quickest way, and we will then email you a free returns label.

If you would rather post the item back yourself to our returns address in Ireland, you pay the postage. Full details are on our Returns page.

Withdrawal from Contract

Faulty, damaged or wrong item?

If your item arrived faulty, damaged or not what you ordered, please follow the steps on our Returns page. We cover the cost of returning these items.

Full details of all our return options are on that page.

Returns page

Delivery prices are shown in euros and confirmed at checkout.

EU PRODUCT SAFETY AND COMPLIANCE

Product safety information is available on request from our customer service team.

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