Is the GPO Centuri 2.5-15x50i suitable for extreme low-light hunting conditions at dawn and dusk?

Yes, this riflescope is well-suited for low-light environments thanks to its large 50mm objective lens, high-transmission GPObright coatings, and an ultra-fine illuminated G4i fibre-optic micro-dot reticle. The red dot illumination is powered by a CR2032 battery and features GPO's iControl auto-off technology to preserve battery life during extended glassing sessions.

Does this optic require any special electrical compliance or SAA/RCM certification for use in Australia?

No electrical compliance certifications such as SAA or RCM are required for this device. The riflescope operates mechanically and only uses a single CR2032 lithium coin battery exclusively to power the reticle illumination system.

How close can I focus the side parallax on the GPO Centuri 2.5-15x50i for close-range shooting?

The side focus parallax adjustment on this model can focus down from infinity all the way to 10 yards. This wide adjustment range makes it versatile enough for close-range rimfire or airgun applications as well as mid-to-long-range centre-fire target engagements.

What optional accessories from the GPO range are compatible with this 50mm riflescope?

For reducing glare in bright Australian outback conditions, you can pair this scope directly with the GPO Sunshade 50mm designed specifically for their 50mm objective models. Additionally, if you need to mount a red dot secondary sight on your setup, the GPO Spectra Dot High Mount serves as a practical compatibility option.

GPO Centuri Riflescope - GPO RCX636

The GPO CENTURI 2.5-15x50i (G4i Reticle) riflescope is a variable-magnification optic built on a 30 mm main tube for big game hunting, low-light shooting, and precision varmint hunting. Equipped with DoubleHD glass elements, GPObright high-transmission optical coatings, and an illuminated G4i micro-dot reticle powered by an iControl red LED system, it delivers clear target resolution across a 6x zoom range. Mechanical adjustments are handled via exposed 1/4 MOA click turrets featuring a Zero-Stop locking elevation system, complemented by a side parallax adjustment dial focusing from 10 yards out to infinity.

Key Features

Illuminated G4i Fibre Reticle: Second focal plane (SFP) reticle featuring an ultra-fine red micro-dot powered by a CR2032 lithium battery with iControl auto-off technology.
Zero-Stop Ballistic Turrets: Exposed elevation turret with 1/4 MOA click values and an integrated locking Zero-Stop mechanism.
Wide Optical Envelope: 6x optical zoom spanning 2.5x to 15x magnification with a 4.0-inch (101.6 mm) eye relief and a field of view ranging from 50 ft down to 8 ft at 100 yards.
All-Weather Protection: IPX-5 water resistance rating combined with PASSIONdrop hydrophobic exterior lens coatings to shed rain and debris.
Side Parallax Focus: Adjustable side focus from 10 yards to infinity for parallax-free targeting on rimfire, airgun, and centre-fire rifles.

Specifications

Magnification: 2.5x – 15x
Objective Lens Diameter: 50 mm
Main Tube Diameter: 30 mm
Focal Plane: Second Focal Plane (SFP)
Total Elevation Travel: Up to 70 MOA
Click Value: 1/4 MOA (0.25″ at 100 yards)
Parallax Adjustment: 10 yards to infinity
Eye Relief: 4.0 in (101.6 mm)
Field of View (at 100 yds): 50 ft (2.5x) – 8 ft (15x)
Overall Length: 14.7 in (373 mm)
Weight: 22.7 oz (643.5 g)
Battery Type: 1x CR2032 3V Lithium
Weather Rating: IPX-5

Who is the GPO Centuri 2.5-15x50 G4i Fibre for?

General-purpose big game hunters — requires light-gathering capability in dawn and dusk conditions, which this riflescope provides through its 50 mm objective lens diameter, GPObright coatings, and an illuminated reticle powered by a 22.7 oz platform.
Mid-to-long-range varmint shooters — benefits from 15x maximum magnification, 70 MOA of total elevation travel, and a side parallax that dials down to 10 yards to manage small targets at variable distances on bolt-action platforms.

Less suitable for: Shooters requiring reticle sub-tensions that remain accurate at every magnification setting (who require a first focal plane riflescope), extreme mountain hunters demanding ultralight setups below 22.7 oz (who suit compact 44mm or smaller objective optics), or long-range PRS competitors needing magnification ranges above 15x with capped field turrets (who suit dedicated 4.5–27x tactical optics).

SKU	GPO40676LP
Model #	RCX636
Brand	Gpo
Shipping Weight	1.0000kg

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Gpo Centuri Rcx636 Riflescope 2.5-15x50i G4i Reticle

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