IIRC you can be in possession of a firearm for 72 hrs? One issue is value of guns. You going to use gunbroker and gunsamerica for average SOLD pricing? Have a smith give an appraisal etc? OR use BBOGV ? What does the ex feel the value is? you need to iron out gun values prior to sale. This way there is no conflict between you and the ex, AFTER a gun is sold.