TromboneChat

If I were to purchase the Blair Bollinger signature model bass trombone, but didn’t really have any interest in using the Bollinger tuning system, how should I go about purchasing the standard Gb tuning slide if it wasn’t included with the instrument?

Ask the seller or producer of this model???

If you're buying the instrument new, it should include a Gb slide (at least according to Shires' website). If you're buying the instrument used, your best bet would be to contact Shires to see if you can purchase one. If you try to get one from somewhere else it'll be a one-off custom job (time + money).

Mine came with both a flat G and a Gb slide.

Both tuning slides are included with purchase.

I have a Bollinger model listed on classifieds now. It has both tuning slides