The LaRue Tactical SPR / M4 Scope Mount QD 34mm (LT104-34) is a precision-machined, cantilever optic mount designed to secure 34 mm rifle scopes directly to MIL-STD-1913 Picatinny rails. CNC-machined in Leander, Texas, from 6061-T6 bar-stock aluminium with a Type III hardcoat anodised finish, the mount features dual proprietary LaRue Speed Levers that provide quick-detach functionality with proven return-to-zero capability. Its forward-extended cantilever architecture provides proper eye relief on flat-top receiver rifles without bridging the optic base to the handguard, while the monolithic backbone and vertically split rings with threaded steel inserts eliminate the need for ring lapping.

Key Features

• Dual Speed Lever QD System: Employs locking cam levers to allow rapid attachment and detachment from Picatinny rails while preserving the rifle's zero across repeated removals.
• Cantilever Geometry: Extends the scope body forward over the receiver to provide optimal eye relief on in-line and flat-top firearm platforms.
• Vertical Split Rings with Steel Inserts: Precision-machined rings feature hardened steel thread inserts to resist thread stripping under high torque and heavy magnum recoil.
• No Lapping Required: Monolithic alignment and CNC machining tolerances provide true alignment straight out of the box.

Specifications

• Optic Tube Diameter: 34 mm
• Optical Centerline Height: 1.50 inches (approx. 38.1 mm) above the top of the rail
• Built-in Elevation / Incline: 0 MOA (flat base)
• Mounting Interface: MIL-STD-1913 Picatinny rail via dual quick-detach levers
• Material & Finish: 6061-T6 aluminium with steel thread inserts; Type III hardcoat matte black anodised
• Total Packaged / Shipping Weight: Approximately 240 g (0.52–0.53 lb)
• Power Requirements: None (purely mechanical)

Who is the LaRue Tactical SPR / M4 34mm Mount for?

• Precision Rifle Competition Shooters — Needs a rigid 34mm QD scope mount with a 1.50-inch centerline height and true return-to-zero performance to quickly swap high-magnification 34 mm optics between match rifles without re-zeroing.
• AR-Platform and Tactical Rifle Builders — Requires the forward cantilever geometry of this 34mm QD scope mount to establish correct eye relief on flat-top receivers while keeping a 0 MOA flat base aligned at a standard 1.50-inch centerline over in-line stocks.
• Medium-to-Long-Range Hunters — Relies on a robust 0 MOA 34mm QD scope mount with dual steel-reinforced locking levers to withstand heavy centre-fire recoil in the field while maintaining precise optic alignment.

Less suitable for: Extreme long-range shooting scenarios where internal scope elevation is insufficient; applications requiring downward forward cant beyond standard zero distances are better served by cantilever scope mounts with 10 MOA or 20 MOA built-in elevation.