urban combat?!?!
.50 is WWWWAAAAYYYY!!!! to big to use in urban combat, unless you want to blow the target into 1,000,000 pieces
The M40A1 106mm recoilless rifle is a dandy tool for urban combat, just the ticket for countersniper use, since it includes a .50 caliber semiauto spotting rifle [.50x77 *short .50*] mounted above the 106mm barrel, with a ballistic profile that matches that of the 106mm High Explosive Antitank round. Just fire the .50 and adjust the fire until its spotter-tracers are impacting on the target, then let fly with the big feller. They are indeed big, heavy and cumbersome; but can be light vehicle mounted, and have proved their worth in conflicts from Cuba in 1958 to the Panama invasion in 1989, and probably since.
And blowing the target into 1,000,000 pieces is exactly the idea....
