That does seem a bit short. I have one Gunny in 3V and another in Elmax, plus a Gunny Hunter and a Gunny Scandi, and all 4 measure about 31/32". My Gunny Vortex is slightly narrower at 15/16", as expected.
Did you get yours new or used (maybe reprofiled or sharpened excessively)? Either way, I don't think it's wrong to be upset or to ask the seller about it.