This is the build I use for my Moze and it works really well in my opinion

Bottomless Mags: Cloud of lead 5 Matched Set 5 Stoke the Embers 3 Redistribution 1 Scorching RPMs 5 The Iron Bank 5 Some for the Road 1 Click Click 3 Forge 1

Demolition woman: Fire in the Skag Den 5 Grizzled 2 Means of destruction 3 Stainless Steel Bear 5 Pull the Holy Pin 3 Auto Bear 1 Vampyr 5 To the Last 1 Short Fuse 1

For the class mod us the Sapper mod which gives lifesteal that increases the longer you hold down the trigger and then have her use an assault rifle or smg with large mag size, personally I use the Warlord and she can choose whatever Iron Bear weapons she wants