You'd better be dead serious about your snowball fighting if you want to build this pneumatic snowball cannon. If you already own an air compressor, you can build it with $50 worth of parts and a heaping helping of patience. Team this sucker up with that Sno-baller we showed you earlier today, and your snowball-fighting army will be totally invincible. [Instructables]
Build Your Own Mofo Pneumatic Snowball Cannon
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