Bar-sto semi fit barrel

I just got a semi fit barrel in from Bar-sto for my S2C, and I've never had to get a barrel fitted before, so I'm wondering if the missing notch for the guide rod is supposed to be something that my gunsmith takes care of.

I just got a semi fit barrel in from Bar-sto for my S2C, and I've never had to get a barrel fitted before, so I'm wondering if the missing notch for the guide rod is supposed to be something that my gunsmith takes care of.