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SKU#QDP-4046 Spuhr
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Spuhr ISMS QDP-4046 Ø34mm Tube 0 MIL (34 mm High) Quick Detach Picatinny Scope Mount

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

"The Spuhr ISMS QDP 34mm mount delivers zero-MOA precision in a rugged, quick-detach design. Lightweight yet strong, it’s perfect for both field use and competition setups. If you want a mount that combines stability, repeatability, and quick-detach flexibility in a compact package, the QDP-4046 should be on your shortlist." - Thomas.

 

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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.

Ring Height - 34mm

 

 

SPECS
Spuhr ISMS QDP-4046 34mm Medium (34mm) Quick Detach 0 MOA Cantilever Mount Specifications

Quick detachable mount for AR-style rifles


Rings: 34 mm
Tilt: 0 MIL/MOA
Height: 34 mm/1.35”
Length: 151 mm/5.94” (mount body only)
Weight: 268 g/9.5 oz
Interfaces: 8 sets
EAN: 7340150705138

 

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 the quick-detach interface maintain alignment after repeated installations?
The cam-lock system pulls the mount into the same recoil surfaces on the Picatinny rail each time it is installed. When the levers are adjusted correctly and the same rail slots are used, the mount typically seats in a consistent mechanical position with minimal variation.

How does the monolithic mount design improve long-term optical stability?
Because the rings and base are machined as a single unit, there is no opportunity for independent movement between components. This maintains consistent alignment over time and reduces the chance of gradual zero shift caused by mechanical loosening.

Can improper lever adjustment influence accuracy at extended distances?
Lever tension determines how firmly the mount is drawn into the rail interface, which affects seating consistency. If tension is too low or inconsistent, slight positional changes can occur that become more noticeable at longer ranges.

How does the mount resist forward movement under recoil?
Recoil forces are transferred into the forward faces of the Picatinny slots through precision-machined recoil interfaces. This mechanical engagement works together with clamping friction to prevent gradual forward creep during repeated firing.

Can repeated removal affect the cam-lock consistency?
Normal installation cycles produce minimal wear on the cam surfaces when properly maintained. Keeping the cam mechanism clean helps preserve consistent lever resistance and clamping force.

Does rail material influence mounting performance?
Steel rails generally provide a more durable interface and resist long-term wear from repeated clamping. Aluminum rails perform well but may show contact surface wear after extended use.

How does the mount maintain scope alignment after minor impacts?
The one-piece structure distributes impact forces across the entire mount body rather than concentrating stress at individual rings. This helps preserve ring alignment even after rough handling.

How does ring torque influence long-term scope reliability?
Proper torque distributes pressure evenly around the scope tube and prevents localized stress. Excessive or uneven torque can distort the tube and affect internal component movement.

Can dirt or contamination affect return-to-zero performance?
Debris trapped between the mount and rail can prevent full seating against the recoil surfaces. Cleaning the interface before installation helps maintain repeatable positioning.

How does the mount behave under temperature variation?
The single-piece aluminum construction expands uniformly with temperature changes. This uniform expansion maintains ring alignment and has negligible effect on zero stability.

Can lever tension changes shift the point of impact?
Changing lever tension alters the clamping preload and may slightly change the mount’s seating position. Any significant adjustment should be followed by zero confirmation.

How resistant is the mount to long-term rail wear?
The mount distributes clamping force across a large contact area, reducing localized wear. Proper lever adjustment helps prevent unnecessary deformation of softer rails.

Can the mount be used across multiple rifles effectively?
The mount can be transferred between rifles, but small differences in rail geometry may affect seating position. Zero should always be verified after moving the mount to a different rifle.

How does the mount support consistent long-range shooting?
Stable ring alignment and a rigid rail interface maintain a consistent optical axis relative to the bore. This stability supports predictable ballistic performance at extended distances.

Does removal and reinstallation affect ring alignment?
Ring alignment remains unchanged because the rings are machined into the mount body. Installation cycles do not affect the coaxial relationship between the rings.

How does the mount handle sustained firing sessions?
The mount maintains stable clamping force even as the rifle heats during extended firing. Thermal changes typically have less influence than rail interface consistency.

What installation practices most influence mounting stability?
Consistent ring torque and correct lever adjustment are the most critical factors. Using the same rail slots and maintaining clean contact surfaces also improves repeatability.

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.

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

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