User blog comment:AYET/Secondary ability of devil fruit powers/@comment-198.82.21.197-20120215155248

Buggy's bara bara no-mi could be used to become immune to bullets. He may be able to break himself into tiny sand-like pieces, so bullets would just go through him as they do Crocodile. Another one (speculating on recent developments) is that possibly he can "chop" other people as well. Though that I think is Law who did that.