You're speaking of the one that could weld, No?
Seems to me the base system valve promised could play the game wouldn't have been able to handle the load of a weapon like that.
f5 for screenshots and they go to C:\Program Files\Steam\steamappa\yourlogin\half-life 2\hl2\screenshots
And I believe its either open <demoname> or play <demoname> one of the two.
HL: Source was just to prove they could direct port from the HL1 engine into the source engine, Its an added bonus, they aren't going to spend much time on it.
If you buy retail or any steam package of hl2 you will get cs:source.
If you buy the silver or gold hl2 package you'll get DOD: Source When Its released.
before you type the command to spawn the combines, type npc_create_equipment and then a weapon command.
The ones that I know work are
weapon_smg1
weapon_AR2
weapon_shotgun
So basicly type npc_create_equipment weapon_AR2 and then hit your combine bind key and they will spawn with irifles.