What size scope rings or mount do I need to attach the GPO Spectra 6x 4.5-27x50i to my rifle?

This scope features a robust 34 mm main tube diameter, meaning it requires 34 mm scope rings or a 34 mm one-piece mount for secure installation on your rifle. It is not compatible with standard 1-inch or 30 mm rings. Ensure you select quality 34 mm rings that match your rifle's rail system.

How does the iCONTROL illumination system operate, and what battery does it require?

The iCONTROL reticle illumination is powered by a single CR2032 button battery housed within the turrets. It features an integrated auto-power-down function that shuts off the illumination after 3 hours of inactivity to preserve battery life, along with a low-battery warning indicator that activates when capacity drops to approximately 15 percent.

Is the GPO Spectra 4.5-27x50i suitable for close-range driven hunting or dense Australian bush?

With a minimum magnification of 4.5x and a field of view of 23 feet at 100 yards, this optic is optimized for long-range precision shooting and open-country varmint or game management. For close-quarters driven hunting or dense scrub, a lower magnification optic such as an LPVO or a 2-10x scope will provide significantly faster target acquisition.

What is the adjustment tracking and total elevation travel on the RS670 turrets?

The turrets offer precise 0.1 mrad adjustments per click with a clockwise (CW) rotation pattern, featuring locking zero-stop turrets for reliable return-to-zero during dialing. It provides a massive 32 MRAD of total internal elevation travel, making it exceptionally well-suited for extreme-range engagements past 1,000 metres.

Long Range Rifle Scope - GPO RS670

The GPO SPECTRA 6x 4.5-27x50i FFP (Model: RS670) is a first focal plane rifle scope engineered for long-range precision shooting, target disciplines, and extended-distance hunting. Featuring a 34 mm main tube and a 50 mm DoubleHD objective lens, this optic provides 32 MRAD of internal elevation travel with 0.1 mrad clockwise (CW) clicks. The optical system incorporates GPObright multi-coatings yielding 90% to 92% daylight transmission, alongside an illuminated LR Pro reticle powered by a CR2032 battery with iCONTROL automatic shut-off functionality.

Key Features

First Focal Plane LR Pro Reticle: Reticle scale remains true across the entire 4.5x to 27x zoom range for consistent sub-tensions and holdovers.
Extensive Elevation Travel: Built with a 34 mm main tube providing 32 MRAD of total elevation adjustment with a tactile, locking zero-stop mechanism.
Precision Optical System: 50 mm DoubleHD objective lens with GPObright multi-coatings minimizes chromatic aberration and delivers 90–92% light transmission.
Side Parallax Focus: Adjustable parallax focus ranges from 10 yards (9.1 m) to infinity.
iCONTROL Illumination: Features continuous brightness adjustment with a 3-hour automatic power-down and a 15% low-battery warning.
Removable Throw Lever: Facilitates rapid magnification transitions between 4.5x and 27x.

Specifications

Magnification: 4.5x – 27x
Objective Lens Diameter: 50 mm
Main Tube Diameter: 34 mm
Focal Plane: First Focal Plane (FFP)
Reticle: Illuminated LR Pro / LRi-Pro
Click Value: 0.1 mrad (1 cm @ 100 m) per click (Clockwise rotation)
Total Elevation Travel: 32 MRAD
Field of View: 7.4 m – 1.3 m @ 100 m (23 ft – 4 ft @ 100 yd)
Eye Relief: 100 mm (4 inches)
Parallax Adjustment: 10 yards (9.1 m) to infinity
Overall Length: 358 mm (14.1 inches)
Weight: 901 g (31.8 oz)
Battery: 1x CR2032
Mounting Compatibility: Requires 34 mm scope rings or a 34 mm one-piece mount

Who is the GPO SPECTRA 6x 4.5-27x50i FFP for?

Long-range precision rifle competitors — requires the 32 MRAD of elevation travel and 27x maximum magnification in this first focal plane rifle scope to dial and hold accurate elevation and windage corrections beyond 1,000 metres.
Open-country pest and game hunters — benefits from the 50 mm objective lens paired with the 4.5x to 27x magnification range to identify and engage targets across vast open terrain.

Less suitable for: Close-quarters driven shooting or dense scrub where the 4.5x base magnification limits field of view, making a 1-6x/1-8x LPVO or 2-10x scope a better alternative; and ultralight mountain stalking, where this 901 g (31.8 oz) optic adds significant carry weight compared to dedicated 450 g to 600 g lightweight hunting scopes.

SKU	GPO40690LP
Model #	RS670
Brand	Gpo
Shipping Weight	1.0000kg

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Gpo Spectra Rs670 Rifle Scope 4.5-27x50i Ffp Lr Pro

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