GPO SPECTRA 8x 2-16x50i Riflescope – G4i Fiber Reticle
The GPO SPECTRA 8x 2-16x50i Riflescope expands GPO’s successful SPECTRA 8x zoom range with a large 50mm objective lens designed for excellent light-gathering capability and outstanding optical performance. It combines a versatile 2-16x magnification range with a compact 30mm main tube, making it a highly capable all-round hunting riflescope for both close and extended distances.
Built around the optical technology developed for the SPECTRA 1.6-13x44i, the 2-16x50i is designed to deliver excellent colour rendition, light transmission, resolution, and edge sharpness, while maintaining a mechanically robust construction.
The large 50mm objective also makes the scope particularly well suited to hunting during deep twilight, even when additional thermal or night vision technology is not being used.
Versatile 2-16x Magnification
The 2-16x magnification range provides exceptional flexibility in the field. At 2x magnification, the scope offers a 20.5m field of view at 100m, making it suitable for hunting on the move and fast target acquisition.
At the opposite end, 16x magnification provides the additional detail and precision required for longer-distance shooting and observation.
This broad 8x zoom range makes the SPECTRA 2-16x50i a genuine all-rounder for hunters who may encounter widely varying distances during the same outing.
Large 50mm Objective for Low-Light Hunting
The 50mm effective objective diameter maximises light-gathering capability, making the SPECTRA 2-16x50i particularly valuable during the early morning and late evening.
With 90% daylight transmission, the optical system is designed to deliver a bright and detailed image while maintaining strong colour reproduction and edge-to-edge clarity.
G4i Fiber Reticle
The G4i Fiber reticle provides a fine and bright aiming reference designed for hunting applications. Its illuminated fibre-based design helps maintain reticle visibility as ambient light levels change.
The reticle works across the scope’s broad 2-16x magnification range, supporting both close-range field use and longer-distance precision.
Advanced Optical Performance
GPO has designed the SPECTRA 2-16x50i around an advanced optical construction intended to provide excellent:
- Image resolution
- Colour rendition
- Light transmission
- Edge sharpness
- Field of view
The result is a clear, detailed sight picture across a wide range of magnifications and lighting conditions.
10m to Infinity Parallax Adjustment
The SPECTRA 2-16x50i features parallax compensation from 10m to infinity, giving the shooter the ability to fine-tune the scope for different target distances.
This broad parallax range also makes the scope suitable for configurations involving compatible technical attachments.
320cm Adjustment Range
The scope provides a substantial 320cm total elevation and windage adjustment range at 100m, with 1cm per click adjustments.
This gives shooters extensive adjustment capability for different distances and ballistic requirements.
Optional GPO Ballistic Turret
The optional GPO Ballistic Turret (GBT) is compatible with the SPECTRA 2-16x50i. The GBT provides a dedicated ballistic adjustment system for users who want quick access to preconfigured distance settings.
Note: The GBT is optional and is not included with the scope.
Specifications
| Specification | Details |
|---|---|
| Product | GPO SPECTRA 8x 2-16x50i |
| Magnification | 2-16x |
| Objective Diameter | 50mm |
| Reticle | G4i Fiber |
| Field of View @ 100m | 20.5–2.6m |
| Exit Pupil | 8.5–3.1mm |
| Eye Relief | 95mm / 3.74″ |
| Click Value @ 100m | 1cm |
| Total Elevation Range | 320cm @ 100m |
| Total Windage Range | 320cm @ 100m |
| Parallax | 10m to Infinity |
| Daylight Transmission | 90% |
| Tube Diameter | 30mm |
| Length | 345mm / 13.58″ |
| Weight | 718g / 25.32 oz |
| Height | 61mm / 2.4″ |
| Width | 83mm / 3.2″ |
| Mechanical Objective Diameter | 57.2mm |
| Mechanical Ocular Diameter | 45.8mm |
Included Accessories
- Instruction manual
- Cleaning cloth
- Bikini scope cover
- CR2032 battery
- Magnification throw lever
Optional accessory: GPO Ballistic Turret (GBT), sold separately.
Ideal Applications
The GPO SPECTRA 2-16x50i is ideal for:
- Hunting
- Hunting on the move
- Low-light and twilight hunting
- Long-distance hunting
- Precision shooting
- Field shooting
- Technical attachment setups
- Shooters looking for a versatile 8x zoom riflescope
Why Choose the GPO SPECTRA 2-16x50i?
The GPO SPECTRA 8x 2-16x50i combines a wide 2-16x magnification range with a large 50mm objective, providing an excellent balance between field of view, magnification, and low-light performance.
Its G4i Fiber reticle, 90% transmission, 10m-to-infinity parallax adjustment, 320cm adjustment range, and 30mm tube make it a versatile optic for demanding hunting applications.
For hunters who want one riflescope capable of handling everything from close-range shots to longer-distance observation—and who value performance in low light—the SPECTRA 2-16x50i is a highly capable all-round solution.

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