I have seen a number of these possible scenarios. It would require Stalin either dying at an inopportune time or him fudging up the early war effort even worse(which is almost asb).
So assuming you want a Germany that is going at it alone with just the traditional Axis powers you are going to...
A breakdown of Soviet command in 41. A Stalin death or something similar. They need a massive victory to cement anything. Unless they form a unholy alliance with Stalin that lasts. But that seems unlikely and probably isnt what you want.
But it could surely take on some armies piece meal. If the USA lands in Portugal do you see all the EU rushing to send armies to the Iberian peninsula?
The BAR was a light machine gun. I refer to wikipedia why because its an awesome source duh.
The Browning Automatic Rifle (BAR) was a family of United States automatic rifles (or machine rifles) and light machine guns used by the United States and numerous other countries during the 20th century