Sen. Dianne Feinstein, Rev. Gary Hall, Rep. Carolyn McCarthy et al. (24 January 2013). Assault Weapons Ban Bill (video). Washington, D.C.: National Cable Satellite Corporation. 2014年4月13日閲覧.
Almasy, Steve (2012年12月19日). “Newtown shooter's guns: What we know”. CNN. https://edition.cnn.com/2012/12/18/us/connecticut-lanza-guns/index.html2012年12月30日閲覧. "The primary weapon used in the attack was a "Bushmaster AR-15 assault-type weapon," said Connecticut State Police Lt. Paul Vance. The rifle is a Bushmaster version of a widely made AR-15, the civilian version of the M-16 rifle used by the U.S. military. The original M-16 patent ran out years ago, and now the AR-15 is manufactured by several gunmakers. Unlike the military version, the AR-15 is a semiautomatic, firing one bullet per squeeze of the trigger. But like the M-16, ammunition is loaded through a magazine. In the school shooting, police say Lanza's rifle used numerous 30-round magazines."
Vance, J. Paul. “Update: State Police Identify Weapons Used in Sandy Hook Investigation”. State of Connecticut Department of Emergency Services & Public Protection Connecticut State Police. 2016年5月17日時点のオリジナルよりアーカイブ。2016年12月15日閲覧。 “Seized inside the school: #1. Bushmaster .223 caliber model XM15-E2S rifle with high capacity 30 round magazine #2. Glock 10 mm handgun #3. Sig-Sauer P226 9mm handgun ... The shooter used the Bushmaster .223 to murder 20 children and six adults inside the school; he used a handgun to take his own life inside the school. No other weapons were used in this crime.”
Mason, Melvin (2016年10月14日). “Sandy Hook families' lawsuit thrown out”. FCIAC Network (Stratford Star). http://www.stratfordstar.com/58379/sandy-hook-families-lawsuit-thrown-out/2016年10月14日閲覧. "In her 54-page ruling, Bellis said the allegations "do not fit within the common-law tort of negligence entrustment under well established Connecticut law, nor do they come within the PLCAA [Protection of Lawful Commerce in Arms Act]'s definition of negligent entrustment.""
Vance, J. Paul. “Update: State Police Identify Weapons Used in Sandy Hook Investigation”. State of Connecticut Department of Emergency Services & Public Protection Connecticut State Police. 2016年5月17日時点のオリジナルよりアーカイブ。2016年12月15日閲覧。 “Seized inside the school: #1. Bushmaster .223 caliber model XM15-E2S rifle with high capacity 30 round magazine #2. Glock 10 mm handgun #3. Sig-Sauer P226 9mm handgun ... The shooter used the Bushmaster .223 to murder 20 children and six adults inside the school; he used a handgun to take his own life inside the school. No other weapons were used in this crime.”