How many movies have Baron Shaver and Steven A. Saltzman collaborated on?

They have worked on 5 movies together! Their first movie together was 12 Rounds 2: Reloaded (2013) while their highest rated movie together was The Marine 4: Moving Target (2015). They have not worked together since 12 Rounds 3: Lockdown (2015). They are most known for their action films together.