GPO SPECTRA 8x 1.6-13x44i Riflescope – G4i Fiber Reticle
The GPO SPECTRA 8x 1.6-13x44i Riflescope is an ultra-compact and versatile hunting optic designed to provide excellent performance across both short and long distances. Combining an impressive 8x zoom range with a compact 44mm objective lens and reinforced housing, the SPECTRA is particularly well suited to hunters who use technical attachments such as thermal imaging and night vision systems.
With a starting magnification of just 1.6x, the scope provides a very wide field of view for fast target acquisition at shorter distances. At the same time, the 13x maximum magnification provides the flexibility required for detailed observation and precision at longer distances.
Ultra-Compact 8x Zoom Design
The 1.6-13x magnification range gives the GPO SPECTRA exceptional versatility. The low 1.6x setting provides a wide 25.6m field of view at 100m, making it suitable for close-range hunting and fast-moving targets.
Increasing the magnification to 13x provides additional detail for longer-distance observation and precision shooting. Despite its broad magnification range, the scope measures just 308mm in length and weighs approximately 685g.
Optimised for Thermal and Night Vision Attachments
The compact 44mm objective lens design and reinforced housing make the SPECTRA 1.6-13x44i an excellent platform for compatible technical attachments.
Its parallax adjustment starting at 10m is particularly useful when working with eyepiece-mounted attachments. The objective features an M46x0.75 internal thread, providing a defined interface for compatible accessories.
Double HD Glass and 90% Light Transmission
The SPECTRA features a Double HD lens system combined with GPObright™ multi-coatings. With approximately 90% transmission, the optical system is designed to maximise available light while maintaining a bright, sharp and high-contrast image.
The exterior lenses also feature PASSIONdrop™ water- and dirt-repellent coating, helping protect the optical surfaces from moisture and contaminants during demanding outdoor use.
Bright G4i Fiber Reticle
The G4i Fiber reticle provides a fine and bright aiming reference designed for hunting applications. Its fibre-based illumination helps maintain reticle visibility across changing light conditions without unnecessarily obstructing the target.
The illuminated reticle complements the SPECTRA’s broad magnification range, making it suitable for both close-range and longer-distance hunting.
Integrated ZERO-Stop and Extensive Adjustment Range
The SPECTRA 1.6-13x44i incorporates an integrated ZERO-Stop, providing a defined reference point for returning to your established zero.
The scope also offers an extensive 3.2m total adjustment range at 100m, equivalent to 320 clicks, providing substantial adjustment capability.
The standard turret can be zeroed without tools, while an optional GPO Ballistic Turret (GBT) is available separately for distance-based ballistic adjustment.
Compact 30mm Main Tube
The 30mm centre tube provides a robust platform while keeping the overall optic compact and lightweight. The short, streamlined design is particularly suited to slim and handy rifle configurations where reducing overall bulk is important.
A supplied throw lever allows fast magnification changes while maintaining your shooting position.
Key Features
- 1.6-13x magnification
- 8x zoom range
- 44mm objective lens
- Extremely compact 308mm / 12.12″ length
- Lightweight 685g / 24.16 oz design
- 30mm centre tube
- G4i Fiber reticle
- Double HD lens system
- GPObright™ multi-coating
- Approximately 90% light transmission
- PASSIONdrop™ water- and dirt-repellent coating
- Parallax adjustment from 10m to infinity
- Integrated ZERO-Stop
- Tool-free zeroing with standard turret
- 320 clicks / 3.2m total adjustment at 100m
- Supplied magnification throw lever
- Optimised for compatible thermal and night vision attachments
- M46x0.75 objective internal thread
- Optional GPO Ballistic Turret available separately
Specifications
| Specification | Details |
|---|---|
| Product | GPO SPECTRA 8x 1.6-13x44i |
| Magnification | 1.6-13x |
| Objective Diameter | 44mm |
| Reticle | G4i Fiber |
| Field of View @ 100m | 25.6–3.2m |
| Exit Pupil | 8.5–3.5mm |
| Eye Relief | 95mm / 3.74″ |
| Click Value @ 100m | 1cm |
| Total Elevation Range | 320cm @ 100m |
| Total Windage Range | 320cm @ 100m |
| Adjustment | 320 clicks |
| Parallax | 10m to Infinity |
| Light Transmission | 90% |
| Tube Diameter | 30mm |
| Length | 308mm / 12.12″ |
| Weight | 685g / 24.16 oz |
| Height | 61mm / 2.4″ |
| Width | 83mm / 3.26″ |
| Mechanical Objective Diameter | 51.2mm |
| Mechanical Ocular Diameter | 45.8mm |
| Objective Thread | M46x0.75 |
| ZERO-Stop | Integrated |
| Throw Lever | Included |
Included Accessories
- Instruction manual
- Cleaning cloth
- Flip Cap cover
- CR2032 battery
- Magnification throw lever
Optional: GPO Ballistic Turret (GBT), sold separately.
Ideal Applications
The GPO SPECTRA 1.6-13x44i is ideal for:
- Hunting
- Short- and long-distance hunting
- Slim and lightweight rifle setups
- Technical attachment configurations
- Compatible thermal imaging attachments
- Compatible night vision attachments
- Eyepiece-mounted accessories
- Hunters who need a versatile all-round riflescope
Why Choose the GPO SPECTRA 1.6-13x44i?
The GPO SPECTRA 8x 1.6-13x44i combines an unusually broad 8x zoom range with an ultra-compact form factor. Its low 1.6x magnification provides a wide field of view for close-range situations, while 13x magnification provides additional reach for longer-distance observation.
The Double HD optical system, GPObright coatings, 90% transmission, G4i Fiber reticle, integrated ZERO-Stop, 10m-to-infinity parallax adjustment, and 320-click adjustment range make this a highly versatile hunting optic.
Its compact 44mm objective and reinforced design also make the SPECTRA particularly attractive for users who want to incorporate compatible thermal or night vision attachments into their setup.

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