Browning Automatic Rifle, aka BAR .50
Just a .50 caliber automatic rifle, the browning was used by the allied forces in WWII.  The muzzle-flash guard would look better but you can't have "coplanar" faces on a func_tank.  Don't ask me why, or what in the heck a coplanar face is.

Author - Phlash (calypso1@geocities.com)
Concept - an automatic rifle on a tripod.
Build time - about 1 hour to get it working right.
Base - JME_Sniper Rifle (i build it all from scratch, but i used his as a "blueprint")
no. of faces - i dunno, a lot.
no. of solids - a lot.
contents - 
1 func_tank
1 ambient_generic
1 func_tankcontrols