So much for the effectiveness of your weapons. Now I will demonstrate one of ours.

6 seconds sound clip from the Radar Men from the Moon - Moon Rocket (S1E1) movie soundboard.

You can hear this line at 00:18:28.369 in the Blu-ray version of the movie.

Quote context

[...]

- You will find that conquering the earth isn't so simple.

- Ah, but it will be because of our atomic weapons.

- On the Moon we have an element, Lunarium, which is far superior to uranium as a base for atomic reactions and we can completely control the force of these reactions enabling us to build atomic weapons ranging from huge cannon to these small ray pistols.

- It's very considerate of you to give me all this information.

- You deserve some reward for your long journey, but unfortunately I cannot permit you to return to Earth with it.

- Maybe I have something to say about that.

- So much for the effectiveness of your weapons. Now I will demonstrate one of ours.

- So Retik plans to invade the Earth with his army from the Moon.

- As soon as the saboteur's, he already has their finish softening up our defenses.

- Do you think he'll be able to do it?

- I'm afraid he might.

- I don't know how many men or rocket ships he has, but his atomic weapons are so far ahead of anything we have he wouldn't need a very big army.

[...]