If you own a copy of Mass Effect 2 and have access to the Cerberus Network–free when purchasing the game new–you can now download the new Arc Projector weapon for free.

The Arc Projector is a new heavy weapon that requires two seconds to charge up, ionizing enemies with an invisible laser before nailing them with a lightning-like bolt. Those with good aim can arc shots to take out explosives at the same time.

Bottom Line: Free lightning gun, go get!