Spuhr ISMS QDP-3016 Ø30mm Tube 0 MIL (34 mm High) Cantilever Quick Detach Picatinny Scope Mount

Spuhr ISMS QDP-3016 30mm High (38mm) Quick Detach 0 MOA Cantilever Mount Specifications

Picatinny mount for use on AR10 rifles
Rings: 30 mm
Tilt: 0 MIL/MOA
Height: 38 mm/1.5”
Length: 151 mm/5.94” (mount body only)
Weight: 270 g/9.5 oz
Interfaces: 8 sets
EAN: 7340150705039
70 g/9.5 oz Interfaces: 8 sets EAN: 7340150705039

• 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.

How does this mount maintain zero after repeated removal and reattachment?
The QDP locking system uses fixed-geometry cam surfaces that clamp the rail with identical force and alignment every time the levers close. Because the clamping pressure and contact points never vary, the optic returns to the same physical position on the rail within extremely tight tolerances.

Why does this mount not require user-adjusted tension like most quick-detach systems?
User-adjusted systems rely on friction and thread tension, which change with wear, temperature, and vibration. This mount uses mechanical preload defined by its cam geometry, eliminating variability and preventing gradual loss of clamping force.

How does the one-piece body improve optical performance compared to two-ring mounts?
A single-piece body guarantees that both rings are coaxial. This prevents bending the scope tube, which can otherwise distort internal lens alignment and cause unpredictable tracking or parallax errors.

What prevents the mount from shifting laterally on the rail under recoil?
The mount uses opposing rail contact surfaces that lock against both sides of the Picatinny slot. This creates a self-centering wedge effect that resists movement in all directions when recoil is applied.

How does this mount protect the scope tube from stress damage?
The rings distribute clamping force evenly around the tube and are aligned at the factory, so the tube is not twisted or ovalized when tightened. This preserves the internal erector system and lens centering.

Why is repeatability more consistent than with lever-based QD mounts?
Typical lever mounts rely on springs or user tension settings, which change slightly each cycle. This mount’s levers stop against solid mechanical limits, ensuring the same locking position every time.

How does the mount respond to temperature changes?
Because the body is machined from a single piece of metal, it expands and contracts uniformly. This prevents differential movement between rings that could otherwise stress the optic or cause zero drift.

Can rail tolerances affect how securely the mount locks?
The clamping system self-indexes against the rail surfaces, compensating for minor variations in rail width and slot depth, ensuring consistent engagement even on rails that are slightly out of spec.

How does recoil affect the locking mechanism?
Recoil forces push the mount deeper into its rail interface rather than pulling it loose, meaning recoil actually increases the stability of the lock instead of weakening it.

What prevents the levers from accidentally opening during use?
The levers lock against solid stops and require deliberate mechanical movement to disengage, making accidental opening from vibration or impact extremely unlikely.

How does this mount handle heavy optics without losing alignment?
The mount’s stiffness and broad ring spacing prevent sag or torsional flex, which could otherwise tilt the optic and shift point of impact.

Why does this design improve tracking accuracy?
When the scope tube is not bent or stressed, the erector assembly moves freely and predictably, allowing elevation and windage adjustments to track true.

Can this mount be used for rapid optic swaps in the field?
Yes. The quick-detach system allows removal and reinstallation without tools while maintaining the same zero, ideal for switching between optics or night-vision setups.

Why is this mount favored for duty or professional use?
It combines the speed of a QD mount with the stability and alignment of a permanent installation, making it reliable in high-stress environments.

Does vibration from semi-auto fire affect the locking system?
No. The locking geometry is immune to vibration because it is based on mechanical interference, not friction or spring tension.

How does this mount prevent scope slippage inside the rings?
The internal ring surfaces are engineered to grip uniformly without point loading, keeping the optic fixed without damaging the tube.

Why is this mount more durable than multi-piece designs?
Fewer parts mean fewer joints that can loosen or shift. The single-piece structure eliminates weak points common in stacked or bolted assemblies.

What makes this mount superior to screw-clamped mounts?
Screw mounts depend on torque consistency, which varies by user. This mount relies on fixed mechanical geometry, removing human error from the mounting process.

What is the primary engineering benefit of this mount?
It guarantees that the optic and rifle behave as a single rigid system, preserving zero, tracking, and optical integrity through recoil, removal, and real-world use.