So are felons in position of a gun which is why the dumbass probably had the switch blade thinking it wasn't a crime. In almost every place I know of switch blades are illegal. Spring assist is fine (don't get me started on that) but as it stands they are illegal. Let's also look at the little angles arrest record.
His arrest record includes at least 18 arrests:
March 20, 2015: Possession of a Controlled Dangerous Substance
March 13, 2015: Malicious destruction of property, second-degree assault
January 20, 2015: Fourth-degree burglary, trespassing
January 14, 2015: Possession of a controlled dangerous substance, possession of a controlled dangerous substance with intent to distribute
December 31, 2014: Possession of narcotics with intent to distribute
December 14, 2014: Possession of a controlled dangerous substance
August 31, 2014: Illegal gambling, trespassing
January 25, 2014: Possession of marijuana
September 28, 2013: Distribution of narcotics, unlawful possession of a controlled dangerous substance, second-degree assault, second-degree escape
April 13, 2012: Possession of a controlled dangerous substance with intent to distribute, unlawful possession of a controlled dangerous substance, violation of probation
July 16, 2008: Possession of a controlled dangerous substance, possession with intent to distribute
March 28, 2008: Unlawful possession of a controlled dangerous substance
March 14, 2008: Possession of a controlled dangerous substance with intent to manufacture and distribute
February 11, 2008: Unlawful possession of a controlled dangerous substance, possession of a controlled dangerous substance
August 29, 2007: Possession of a controlled dangerous substance with intent to distribute, violation of probation
August 28, 2007: Possession of marijuana
August 23, 2007: False statement to a peace officer, unlawful possession of a controlled dangerous substance
July 16, 2007: Possession of a controlled dangerous substance with intent to distribute, unlawful possession of a controlled dangerous substance (2 counts)