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

SKU#QDP-4046 Spuhr

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

Name: Spuhr ISMS QDP-4046 Ø34mm Tube 0 MIL (34 mm High) Quick Detach Picatinny Scope Mount
Brand: Spuhr
Price: 419.95 GBP
Availability: InStock

1 in stock

The Spuhr ISMS (Ideal Scope Mount System) is a premium one-piece scope mount designed for shooters who demand maximum stability, precision and modular versatility. Precision-machined from single-piece billet aerospace-grade aluminium, it provides exceptional rigidity and reliable zero retention under heavy recoil. Featuring diagonally split rings, an integrated levelling system and multiple accessory interfaces, it ensures precise scope alignment and versatile accessory mounting. Finished with a durable hard-anodised coating and offering a 34mm ring height, the ISMS delivers a robust, dependable platform for long-range, tactical and competition shooting.

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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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Must-Have Additions for Your Order!

Spuhr ISMS QDP Quick Detach Picatinny Mount-34mm-0 MOA-34mm

THIS ITEM:

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

£419.95

Spuhr A-0119 Bubble Level Assembly

£89.99

Spuhr Levelling Kit For Separate Rings

£39.95

Total (3): £549.89

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, 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 - 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

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!

MOUNT SIZE GUIDE

Ring Height Calculator

This calculator works out the minimum ring height (base-to-centre) you should use, including a tolerance allowance.
Please note: All clearance calculations are based on mounts with 0 MOA. While MOA can be factored in, actual clearance may vary due to variables that can't always be accurately calculated. If you're considering an MOA mount and are unsure about the required height, we recommend contacting our sales team directly.

Scope Objective Outer Diameter (A)