I recently sent my MP5 into a local store for repair. I put a Madbull 6.03 363mm tbb in it, and so I asked about changing the cylinder to an M4 cylinder while they were in my mechbox, and the guys there said that they find the best results with Type 0 cylinders in all guns. So thats what I ended up putting in my gun. Ill let you guys know what the results are when I get my gun back in a couple weeks.
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