The 5DR mecha's gun has two purposes. Here's the second.

One of the tools installed in the 4DR mecha is a foam grenade launcher.

RESCUE LABOR resin kit: test of full leg assembly video

Real pictures of the Rescue Labor (5DR) work-in-progress: mecha's leg.

Specifications are known for the science-fiction mecha codenamed RESCUE LABOR resin kit.

Great time with science fiction and what-if fans at the scale model expo....