excellent, just the man to ask!
i'm sure that the TM Mk3 would cope with the load imposed by an M150, but as i have stated, i'm looking to put one of these in my m249, (m120 spring load, so not 'over the top') BUT i would like to know how well the SMU would cope with _extended_ bursts (upto/including 30 seconds) overheating is my main concern..
i guess i'm damn lucky to have you available to answer my questions
EDIT:
to be honest, i'm sold on the TM Mk3.. just need to wait for it to come in stock.