CHASSAHOWITZKA — They wore earplugs and had to scream over machine gun fire, but that didn't stop a couple of gung ho firearms enthusiasts from swapping a few jokes. "Is this what July 4 is all about?" one guy screamed to another. "If I heard (Thomas) Jefferson correctly, he said do this every 4th of July!" he answered. Seconds later, someone fired off 100 rounds from a custom-made, chopped-down, .223-caliber HK53K. The 4-inch barrel did nothing to muffle the... (GunPolicy.org)