All Government Issue packs and gear come in dark green and woodland camo. There are many non-issue patterns and packs out there. Most are for para-military and hunters, etc. You will see mainly issue items used by the actual military since we like to be uniform and not look like a bunch of ragtag mercenaries with all sorts of mismatched gear.
ALICE Rucks come in all green, except the medium ruck pictured above, which comes in green and woodland camo.

The newer MOLLE rucks come in woodland camo only.

A few items are being issued in the Army digital ACU pattern as well.

Basically the same gear is used by all the services, so they would be the same on an M1 as they would on a LAV.