One blast from that ray gun will pop this ship like a toy balloon.

3 seconds sound clip from the Radar Men from the Moon - Bridge of Death (S1E3) movie soundboard.

You can hear this line at 00:03:26.127 in the Blu-ray version of the movie.

Quote context

[...]

- Too bad you lost that ray gun. You'll have a tough time getting another one now.

- We haven't a chance of getting one.

- We couldn't possibly attack their city with any of our weapons.

- That isn't the worst of it.

- They've already tracked us halfway to this ship so they know about where we are.

- It's only a question of time until they find us.

- One blast from that ray gun will pop this ship like a toy balloon.

- Maybe we better get back to earth.

- I think so.

- We've accomplished the most important part of our mission.

- We discovered that Retik is planning to lead an invasion from the moon as soon as the saboteurs finish softening up our defenses, and it's up to us to get that information back to Earth.

- How soon can we take off?

- Well I've gotta build up the pressure in all the tanks and warm up the jets... Maybe a couple hours.

- Then get started. I'll fly out and scout around until you're ready.

[...]