It's going to vary by Garrison/GML but you should be ok. If the GML is unsure, they will contact the appropriate detachment for clarification and the Bounty Hunter's Guild should be aware of this change by now I'd think. Anyway, your best starting point is to ask your GML and go from there.
Thread referencing the forward barrel arch removal (in case you haven't seen it):
General - Boba Fett Pulce 40 Empire Strikes Back Pistol