I had a blast painting my Sanguinary Priest, so I thought I'd use the left over parts from the upgrade sprue to make an Assault Squad for him to join. After the jump you can see the helmets and my weapon choice. 

I decided on two meltaguns for this unit. Their speed will make it easy for them to tank hunt. As for the helmets, I love the beaky MK6 helmets so I've got two of those in the unit. I have a helmet from the Death Company set, a helmet from the Venerable Dreadnought set and a helmet from the assault marine sprue. Undercoating everything separately is a great way to save time.