Snipers are indeed a good way to counter Rifles, but have fun with the M20/M15 then, because Ostheer T2 already comes late than the Lt tech, getting sniper would even more delaying your Pak.
If the American player is competent then it would be a problem. If the guy is one to go full power when reversing straight to you, then the triple fist(faust) (sounds like a kung fu move

) will work.