Technical Data
Product Information
| Item information | Value |
|---|---|
| HAN: | A320 |
| Category: | OPTICS |
Accessory · ballistic turret for SPECTRA™
GPO GBT Ballistic Turret
Ballistic turret for selected GPO SPECTRA™ riflescopes: the standard turret cap is replaced by the GBT in a few seconds.

Product
Retrofit accessory; no riflescope is included. The GBT only fits the SPECTRA™ models named by GPO (see Matching items).
Features in practical use
Quick swap
The standard turret cap is replaced by the GBT in a few seconds; converting without re-zeroing.
Five stacked rings
A base ring and four freely adjustable ballistic rings (rings 2 to 5) for freely selectable distances; the base ring carries the click values.
Zero stop
The zero stop already built in as standard can be used with both turret variants and is freely adjustable.
Lockable
The GBT can be locked (pressed-down, locked position) and is thus protected against accidental adjustment.
Setting in clicks
The rings are set with correction values in clicks (1 click = 1 cm at 100 m); the values come from ammunition data, ballistic calculators or your own shooting tables.
For selected SPECTRA™ models
Fits SPECTRA™ 8x 1-8x24i*, 1.6-13x44i and 2-16x50i and the rail models 6x 1-6x24i, 6x 2-12x50i, 8x 1-8x24i, 8x 1.6-13x44i and 8x 2-16x50i.
Scope of delivery
- GBT ballistic turret: turret cover, central screw, base ring 1 and ballistic rings 2 to 5
Matching items
According to GPO compatible with SPECTRA™ 8x 1-8x24i*, 8x 1.6-13x44i and 8x 2-16x50i and with the new rail models SPECTRA™ 6x 1-6x24i, 6x 2-12x50i, 8x 1-8x24i, 8x 1.6-13x44i and 8x 2-16x50i with rail. *Only the latest 1-8x24i with zero stop integrated in the turret; the predecessor without zero stop is not compatible. A riflescope is not included.
Warranty
GPO grants a 10-year manufacturer's warranty on optics and mechanics from the date of purchase; statutory rights remain unaffected. The warranty card is available as a download.
* Firearms, mounts and other accessories shown are not included unless expressly listed. The selected item variant and the described scope of delivery are decisive.
GPO
