I have sprues of all the Bolt Action German sets and also Perry Afrika Korps on my table.
They are not compatible without a lot of effort.
The Bolt Action shoulders are 10% wider than the Perry so the sets of weapons with two arms will not fit.
The single arms will fit but as the Perry sculpts are slimmer and smaller, this looks rather like a weightlifter with a child's arms.
Also the Perry weapons are about 10% smaller.
