How does the GPO Centuri 3-18x50i perform in low-light conditions like dawn and dusk deer hunts?

The Centuri 3-18x50i features a large 50mm objective lens paired with Double HD objective lenses and GPObright high-transmission coatings to maximize light gathering when ambient light drops. Additionally, the illuminated G4i micro-dot reticle with iControl technology provides a crisp, adjustable red centre dot that remains highly visible against dark bushland without washing out the target.

Can I mount this riflescope on a rimfire rifle for close-range target shooting?

Yes, the side-focus parallax adjusts smoothly from a minimum of 10 yards out to infinity, making it exceptionally well-suited for rimfire precision shooting as well as long-range centrefire setups. However, keep in mind that attempting to engage targets closer than 10 yards will result in parallax error and an unsharp focus.

What kind of rings do I need to mount the 30mm tube to my rifle in Australia?

The GPO Centuri features a standard 30mm main tube diameter, which easily accommodates readily available Australian mounting infrastructure such as standard 30mm scope rings, Picatinny, or Weaver rails. Because it weighs 23.3 oz (~660 g) and has a 50mm objective bell, ensure you select medium or high rings to achieve proper clearance over your rifle barrel.

Are there any compatible accessories available from XHunter that pair well with this optic?

Yes, if you want to reduce glare in harsh Australian outback sunlight, you can pair this riflescope with the GPO Sunshade 50mm designed specifically for their 50mm objective models. For safe transport and field protection of your gear while stalking, the GPO Bino Harness Pro makes a great companion addition to your hunting rig.

Hunting Riflescope - GPO Centuri RCX652

The GPO Centuri 3-18x50i is a second focal plane hunting riflescope engineered for variable-range precision across medium- to long-distance shooting applications. Featuring a 6x zoom ratio with 3-18x magnification, Double HD objective glass, and GPObright high-transmission lens coatings, this optic delivers clear image resolution in low-light environments. The illuminated G4i micro-dot reticle uses a fibre-optic center dot powered by a standard CR2032 battery and controlled via Micro-Dot iControl for daytime and low-light contrast. Housed in a 30 mm main tube, it provides 110 MOA of total elevation and windage adjustment with 1/4 MOA click values, a zero-stop locking elevation turret, and side parallax adjustment focusing from 10 yards to infinity.

Key Features

Double HD Optical System: Equipped with a 50 mm objective lens, GPObright coatings, and PASSIONdrop hydrophobic external coatings to maximise light transmission and repel moisture.
Illuminated G4i Reticle: Second focal plane reticle with a fine fibre-optic illuminated red centre dot for high-contrast aiming in direct sunlight or failing light.
Locking Ballistic Turret: Features 1/4 MOA click adjustments, a zero-stop locking elevation mechanism, a rotation indicator, and up to 110 MOA total travel.
Side-Focus Parallax: Smooth turret adjustment correcting parallax error from 10 yards (~9.1 m) out to infinity.
Rapid Magnification Control: Includes a removable throw lever to facilitate swift magnification changes across the 3x to 18x range.

Specifications

Magnification: 3–18x
Objective Lens Diameter: 50 mm
Main Tube Diameter: 30 mm
Focal Plane: Second Focal Plane (SFP)
Reticle: Illuminated G4i Fibre Dot (Micro-Dot iControl)
Click Value: 1/4 MOA (0.25 MOA per click)
Total Adjustment Travel: 110 MOA (Elevation and Windage)
Parallax Adjustment: Side focus, 10 yards to infinity
Field of View: 50 ft to 8 ft at 100 yards (3x to 18x)
Eye Relief: 92 mm to 100 mm (~3.6–4.0 inches)
Overall Length: 14.6 inches (~371 mm)
Weight: 23.3 oz (~660 g)
Power Supply: 1x CR2032 3V lithium coin cell

Who is the GPO Centuri 3-18x50 G4i Fibre for?

Dawn and dusk deer hunters — leverages a 50 mm objective lens paired with 3-18x magnification and an illuminated fibre-dot reticle to maximise light capture and shot placement when stalking game at medium to long distances in failing light.
Rimfire and centrefire precision target shooters — relies on the 110 MOA total adjustment range and a side parallax that dials down to 10 yards, giving this second focal plane riflescope the travel and close-focus clarity needed for both short-range rimfire targets and long-range dial-up shooting.

Less suitable for: Target engagements inside 10 yards where parallax error occurs, ultralight mountain hunters who prefer lightweight 450–500 g scopes over a 660 g optic, and shooters requiring accurate reticle-based holdovers across the entire magnification range who need a first focal plane (FFP) riflescope.

SKU	GPO40680LP
Model #	RCX652
Brand	Gpo
Shipping Weight	1.0000kg

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Gpo Centuri Rcx652 Riflescope 3-18x50i G4i Reticle 30mm Tube

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