Looks like Batman's really softening on that "no guns" rule, what with his heavily-armed Batmobile in the Arkham Knight game and now this grenade launcher and sticky bombs being exhibited from Dawn Of Justice.
Tom Baker is the Comics Editor at WhatCulture! He's heard all the Doctor Who jokes, but not many about Randall and Hopkirk. He also blogs at http://communibearsilostate.wordpress.com/