Can I use the Sightron S1 G2 4-12x40 AO on my rimfire or air rifle for very close-range pest control?

Yes, this scope features an adjustable objective (AO) collar that allows you to adjust parallax focus down to 10 yards and out to infinity. This makes it exceptionally well-suited for close-range rimfire and air rifle pest control where sharp focus at short distances is critical.

Does the Sightron SI-32008 require any batteries or electrical certification for use in Australia?

No batteries or electrical power sources are required. The SI-32008 is a completely passive, analogue optical instrument featuring a non-illuminated MOA-20 reticle, meaning electrical compliance certifications such as SAA or RCM do not apply to this scope.

What kind of recoil can this riflescope handle, and is it suitable for centre-fire hunting rifles?

The scope is built with a rugged one-piece aircraft-grade aluminium 1-inch tube and is rated to a robust 1,000G shock resistance. It easily accommodates heavy rimfires, airgun reverse recoil, and standard hunting centre-fire calibres up to standard magnum classes like .300 Win Mag.

What type of mounting rings do I need to attach this scope to my rifle?

The Sightron S1 G2 4-12x40 AO requires standard 1-inch (25.4 mm) mounting rings. Depending on your rifle setup, it can be securely paired with rings designed for common Picatinny rails, Weaver rails, or rimfire dovetails found on popular Australian sporting firearms.

4-12x40 Riflescope - Sightron SI-32008

The Sightron S1 G2 4-12x40 AO Riflescope is a variable-power optical sight designed for rimfire, air rifle, and centre-fire sporting platforms. Built around a 1-inch (25.4 mm) one-piece aircraft-grade aluminium maintube, it features a 4x to 12x magnification range paired with a 40 mm objective lens. An integrated Adjustable Objective (AO) collar allows shooters to eliminate parallax error from 10 yards (9.1 m) out to infinity. The second focal plane MOA-20 reticle provides 2 MOA hash-mark increments for windage and elevation holdovers without requiring adjustments to the capped hunting turrets. Utilizing proprietary MC-333 fully multi-coated lenses, the optic requires no batteries or electrical power, delivering passive light transmission in an IPX7 waterproof housing engineered to withstand 1,000G recoil forces.

Key Features

Adjustable Objective Parallax Correction: Rotatable objective bell focuses down to 10 yards (9.1 m) and extends to infinity for parallax-free target acquisition.
MOA-20 Reticle: Second focal plane reticle configuration featuring 2 MOA sub-tensions for elevation holdover and wind compensation.
Capped Turret Adjustments: Tactile 1/4 MOA click values with 15 MOA per complete revolution and 60 MOA total internal elevation and windage travel.
Ruggedised Housing: Nitrogen-purged, O-ring sealed aluminium construction rated IPX7 waterproof and shockproof to 1,000G recoil.
Fully Multi-Coated Optics: MC-333 optical coatings applied to all air-to-glass lens surfaces to maximize light transmission.

Specifications

Magnification: 4x to 12x
Objective Lens Diameter: 40 mm
Tube Diameter: 1 inch (25.4 mm)
Reticle: MOA-20 (Second Focal Plane, non-illuminated)
Parallax Adjustment: 10 yards (9.1 m) to infinity via Adjustable Objective
Eye Relief: 3.5 inches to 3.2 inches (89 mm to 81 mm)
Field of View at 100 Yards: 29.97 feet (at 4x) to 9.95 feet (at 12x)
Click Value: 1/4 MOA
Total Adjustment Travel (Elevation/Windage): 60 MOA / 60 MOA
Overall Length: 12.3 inches (312 mm)
Weight: 17.1 oz (485 g)
Environmental Rating: IPX7 waterproof, nitrogen-purged fogproof, 1,000G shockproof

Who is the Sightron S1 G2 4-12x40 AO Riflescope for?

Rimfire and air rifle shooters — Requiring parallax correction down to a 10-yard minimum, this adjustable objective rimfire riflescope enables sharp, parallax-free target focus at typical backyard and short-range distances that fixed 50-yard or 100-yard scopes cannot resolve.
Pest control hunters — Engaging fast-moving rabbits and foxes across shifting field distances, this optic provides a 4x to 12x magnification range paired with a 40 mm objective lens for quick identification from close cover out to mid-range paddocks.
Sporting rifle owners — Mounting to platforms via common 1-inch rings, this scope maintains standard firearm balance with a total weight of 17.1 oz (485 g) and absorbs heavy recoil loads up to a 1,000G shockproof threshold.

Less suitable for: Target engagements closer than 10 yards where focus cannot be resolved, distances beyond 500 to 600 metres that exceed 12x magnification and 60 MOA of internal adjustment, or heavy nocturnal hunting; shooters operating at extended long range require a 30mm or 34mm tactical scope with 80+ MOA elevation travel, while low-light or night hunters are better served by a 50mm illuminated reticle optic.

SKU	SIT42357LP
Model #	SI-32008
Brand	Sightron
Shipping Weight	1.0000kg

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Sightron Si-32008 Riflescope 4-12x40 Ao Moa-20

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