Can the GPO Spectra Dot 1x20i handle heavy recoil from large-calibre hunting rifles and 12-gauge shotguns?

Yes, the Spectra Dot is built with a rugged, machined aluminium chassis designed to withstand the rigorous recoil of high-calibre centerfire hunting rifles and 12-gauge shotguns. Its internal electronics and components are shock-tested and nitrogen-purged to maintain zero under heavy field use.

What kind of battery does the Spectra Dot use and how long does it last in the field?

The sight is powered by a single standard 3V CR2032 lithium coin battery, which delivers up to 50,000 hours of continuous runtime on a medium setting. Because it runs on low-voltage lithium cells, it requires no mains power charging peripherals and is completely compliant for unhindered outback and bush use across Australia.

What mounting systems come with the optic, and can it be fitted directly to a pistol slide?

The Spectra Dot comes equipped with an integrated, low-profile clamp designed for standard Weaver and MIL-STD 1913 Picatinny rails. If you need a raised co-witness setup on a modern sporting rifle, it pairs seamlessly with the GPO Spectra Dot High Mount available in our range. Please note it cannot be directly mounted to pistol slide micro footprints without separate rail adapters.

How does the illumination dial perform in bright Australian daylight versus low-light conditions?

The side rotary dial features 11 distinct brightness settings to suit varying environments, comprising 6 daylight-visible levels and 5 night-vision compatible levels. The 3 MOA red dot combined with GPObright proprietary multi-coatings ensures high contrast and clarity whether you are shooting under harsh outback sun or in dim twilight cover.

Red Dot Sight - GPO Spectra Dot RD100

The German Precision Optics (GPO) Spectra Dot 1x20i (model RD100) is a compact, unmagnified red dot reflex sight engineered for fast target acquisition across close-to-medium ranges. Featuring a 22 mm objective lens with a 20 mm clear aperture, the sight utilizes proprietary GPObright multi-coatings to maximize target contrast and optical clarity. Powered by a single 3V CR2032 lithium coin cell providing up to 50,000 hours of runtime, it offers 11 brightness settings—comprising 6 daylight-visible and 5 night-vision device (NVD) compatible levels—housed in an IPX7 waterproof, nitrogen-purged aluminium chassis.

Key Features

Precise Aiming Point: Features a 3 MOA red dot reticle with 0.5 MOA (1/2" per click at 100 yards) adjustments and capped turrets with integrated adjustment tools.
Expansive Adjustment Travel: Delivers 120 MOA of total elevation and 120 MOA of total windage adjustment to simplify zeroing on varied platforms.
Optical Coatings: Proprietary GPObright multi-coated lenses deliver high light transmission and contrast with unlimited eye relief and a factory parallax-free design.
Illumination Range: Side rotary dial controls 11 distinct brightness settings (6 daylight and 5 NVD-compatible levels).
All-Weather Reliability: Nitrogen-purged, IPX7 submersible waterproof construction built to withstand harsh field environments.
Direct Rail Interface: Integrates directly onto standard Weaver and MIL-STD 1913 Picatinny rails via a low-profile clamp mount.

Technical Specifications

Magnification: 1x (true non-magnified)
Objective Lens Diameter: 22 mm effective (20 mm clear aperture)
Reticle: 3 MOA Red Dot
Click Value: 0.5 MOA per click (~1.45 cm at 100 m)
Total Adjustment Range: 120 MOA elevation / 120 MOA windage
Eye Relief: Unlimited
Dimensions: 64.5 mm (L) × 45.3 mm (W) × 36 mm (H without mount)
Weight: 103 g (sight body only); ~187 g (with mount assembly and battery)
Battery Type: 1 × 3V CR2032 lithium coin cell
Battery Runtime: Up to 50,000 hours
Mount Compatibility: Weaver / MIL-STD 1913 Picatinny

Who is the GPO Spectra Dot 1x20i for?

Driven game hunters in dense cover — Requires rapid, both-eyes-open tracking where the Spectra Dot 1x20i reflex sight provides an unobtrusive 103 g sight body and a crisp 3 MOA red dot for fast target acquisition without adding excess bulk to handling rifles.
Close-range pest controllers — Operates across demanding conditions requiring the 120 MOA total elevation and 120 MOA total windage adjustment range of this red dot sight to achieve a fast zero on high-recoil rifles targeting pigs, deer, and foxes under 100 metres.
Fast-action sport shooters — Relies on continuous optic readiness across shotgun, rimfire, and sporting rifle platforms supported by the Spectra Dot's 50,000-hour battery runtime on a single CR2032 cell.

Less suitable for: Target engagements beyond 100 to 150 metres, where the unmagnified 3 MOA dot covers excessive target area (~15 cm at 200 m) and is better served by a low-power variable optic (LPVO) or traditional magnified riflescope; direct mounting to pistol slide micro footprints (e.g., RMR/RMS footprints) without a dedicated Weaver or Picatinny adapter.

SKU	GPO40678LP
Model #	RD100
Brand	Gpo
Shipping Weight	1.0000kg

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Gpo Spectra Dot Rd100 Red Dot Sight 3 Moa 1x20i

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