What weapons are being carried by this Israeli underwater unit?

The long tube-y things in this (recruitment?) video for their SEAL-type guys.

This is from an actual action very recently. No reason they should be the same, or even the same military unit (Shayelet), but might be related.

Looks like silencers on the front of their service weapons to me.

They’re Mini-Uzis with big-ass silencers.

That shows up in a lot of still photos, but in the videos the guns look browner and longer. Are they just mini-Uzis with an extended stock and painted desert camo, or are they using different weapons in the vids?

Look at 0:40 - that looks very much like an Uzi variant to me. I’ve also never heard of the IDF using any sub machine gun other than the Uzi.