When Agent Hanna and the suspect finish fighting by pulling guns on one another, Hanna pulls a Glock 22. The camera pans to Agent Callen. When it returns to Hanna, he is holding his service pistol (a SIG Sauer P228).
As G. and 'Sam' exit Sam's car on the beach front, there is a boom mic reflected in the rear driver's side body pillar and glass.