Tripods, well I own several MG42 Lafette / tripods and 1 mg3 lafette / tripod. Going to use the term Lafette from this point on.
MG3 Lafette I have shot and watched others shoot off their MG3 Lafette and watched them just set the firing lever straight out at horizontal and then just bump it down as fast as they can. Now the MG42 Lafette you have to squeeze your hand to fire. Ok, squeeze, open, squeeze, open, squeeze, open, squeeze, open - fast but not as fast an action. How fast can you tap your hand on the desk in front of you???? Now how fast can you open close same hand????
Really both are fast enough to start draining my pocket of ammo and money.
Another thought is to spend a lot of money and buy one of those registered ar 15 sears that make a semi auto ar15 into a full auto. After all most semi auto MG42's use an ar15 lower.
Interesting thoughts on this. Good Luck with it. Let us know of any ideas that you come up with.
Myself I'm going to try to save a little ammo and money shooting a little bit slower. That said once or twice is still fun.