Annual Washington Post Bucket Event 2010

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Travis Lerol holds an AR-15 assault rifle along with a rifle's lower... News Photo3D Printing,AR-15,Abdominal Muscle,Holding,Horizontal,Human Interest,Making,Maryland - State,Plastic,Rifle,USA,ViolencePhotographer Collection: The Washington Post 2013 The Washington PostGLEN BURNIE, MD - FEBRUARY 12: Travis Lerol holds an AR-15 assault rifle along with a rifle's lower receiver made of ABS (Acrylonitrile Butadiene Styrene) plastic that was constructed by his 3D printer at his home on Tuesday, February 12, 2012, in Glen Burnie, MD. Lerol is a techie and gun owner who has tried using a 3-D printing program that makes parts for the AR-15 style assault rifle. (Photo by Jahi Chikwendiu/The Washington Post via Getty Images)