The man who fired on police officers in North Dakota earlier this month chose to use a gun that was modified with a binary trigger.

The man who fired on police officers in North Dakota earlier this month chose to use a gun that was modified with a binary trigger.

A binary trigger is a modification that allows a weapon to fire one round when the trigger is pulled and another when it is released — in essence doubling the firing capacity, firearms experts ...

A binary trigger is a modification that allows a weapon to fire one round when the trigger is pulled and another when it is released — in essence doubling the firing capacity, firearms experts ...