Figure somebody's gonna ask this question sooner or later.

Do you mean the one used by the Albino?

If so, I think it was an HK model of some sort. It seemed to be the follow on model of the MP5.

Yes, it was definitely a UMP.

Definatley an HK UMP with OKO reflex. I had an Insta Boner when I saw that thing. Easily the coolest part of the movie.

I saw a movie pic that showed Morpheus carrying an Mp5(K? the pistol sized one) with the handguard removed so you could see the barrel.

The Matrix: Reloaded kicked some major butt, but there weren't as many guns in this one...

One of the twins had a UMP with a reflex optic (probably an OKO, as was mentioned).

Trinity seems to like the Beretta and mini-Uzis akimbo.

Morpheus had a Glock 18.

The agents still carry Desert Eagles.

Some of the other folks had a collection of automatic weapons; various subguns and short rifles. The only one that stuck out on my first viewing was a Colt 9mm Model 635, and only then because I carried one for a couple of years. I am sure I will catch more on subsequent viewings.

But my real question is, what kind of weapon did Al Pacino carry in the movie "Heat?"

It looks like from front to back:
Uzi, Thompson, Colt 9mm SMG, MP5K, G36?, MP5A3

[img]http://members.cox.net/smproud/matrixguns.jpg[/img]

second to last is an  AG36k  because of the 40mm grenadelauncher