I was looking at the kit unlocks on Battlelog, and I noticed that they had the M16A4 and M4 for the assault and engineer kits respectively.

This is in addition to the M16A3 and M4A1 that the USMC starts with.

These should be three-round burst versions of the starting weapons (if the game follows reality, and it would be redundant if they weren't). Unfortunately when clicking on the thumbnails it resirects me to the pages for the starting weapons so I can't confirm my suspicions just yet.

And PC guys, I've created a BZP Platoon so go search for 'bzpower' under platoons and join up.

Now my actual opinions on the game:

Haven't played the campaign or co-op.

Only played conquest so far for multiplayer. 64-player Métro is trash. The rest of the maps are glorious. My favourite so far is probably Kharg Island.

Source: Battlefield