> Chainguns are a type of autocannon. AIUI, chainguns are any externally electrically-actuated automatic weapons, including both single-barrelled and rotary de

> Chainguns are a type of autocannon. AIUI, chainguns are any externally electrically-actuated automatic weapons, including both single-barrelled and rotary designs, some of which are autocannons, and some of which are lighter (machine guns). But, yeah, it makes more sense if GP intended to refer to belt-fed weapons, not actual chainguns.