What firearms are the troops using?

Answer:
Well, I guess that depends on whose troops! If you are talking about the U.S. Army, then the standard infantry rifle is the M4 carbine in 5.56x45mm. The standard sidearm is the Beretta M9, in 9mm. Different positions and different branches get different guns.
Contributor: Mikipedia
First answer by Jmanwit. Last edit by Jmanwit. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].