Ah, made by the Mauser corporation? Your in good hands. Though I must admit, the design looks a bit old fasioned, but if it works... I figure a twenty or thirty mike-mike would get the job done, or a chaingun like the one we have on the AH-64.
And most of the newer helos can do loops, though in the hands of a skilled pilot, most agile gunships can preform the manuver. The Comanche could do both flips and corkscrews, but that is more for the 'what if' questions.