Just a week before its much-awaited premiere, MBC's upcoming drama "The King 2Hearts" has been releasing series of teaser, hyping up anticipations. MBC has unveiled more stills of the lead stars Lee Seung Gi and Ha Ji Won.

In the new still cuts, Lee Seung Gi and Ha Ji Won managed to pull off the gun training scene. Their characters train together in a simulated street battle for the World Officer Championships.

This scene was taken in Jeju Islnd last month on the 20th with various equipments to create a realistic North-South unified team training. Ha Ji Won and Lee Seung Gi wore helmets and headsets with the hi-tech MILES (Multiple Integrated Laser Engagement System) that are actually used in the military for a more realistic look.

The shoot went on for about 8 hours and Ha Ji Won showed her skills as a excellent shooter while Lee Seung Gi made a few jokes during the shoot and everything was completed with joy.