Maintenance for the week of December 23:
• NA megaservers for maintenance – December 23, 4:00AM EST (9:00 UTC) - 9:00AM EST (14:00 UTC)
• EU megaservers for maintenance – December 23, 9:00 UTC (4:00AM EST) - 14:00 UTC (9:00AM EST)
Only way I know of is to make a duplicate of the weapon. If you're a crafter this is easy-peasy. If it's a rare drop then just make sure you're using it on your "primary" action bar.