Suppressor VS Ear protection. Which is more effective?

[nm.otter]

3M makes good over ear pro.
...
Make a black and gray version that was rated at 32 dB reduction.

Zero hits for "32 NRR" on the 3M site or on Amazon. Not much black and gray, either. Perhaps these?

Decibel Defense claims 37 dB -- I am skeptical.

 

[Sled]

Zero hits for "32 NRR" on the 3M site or on Amazon. Not much black and gray, either. Perhaps these?

Decibel Defense claims 37 dB -- I am skeptical.

Maybe. I have them on my gun mounts still. I'll take a pic next time I'm up there.

Edit: I found the link here. They were rated 31nrr previously. They work well for low ranges and are considerably better than the one I linked above. I think the ones you were looking at are the updated model.

 

[nm.otter]

Still 31 https://www.3m.com/3M/en_US/p/d/b00037368/

 

[Sled]

Still 31 https://www.3m.com/3M/en_US/p/d/b00037368/

That's good. Wouldn't be the first time Amazon got a spec incorrect in the title