Chapter 6 details the events surrounding the Sandy Hook Elementary School shooting perpetrated by Adam Lanzer with a semiautomatic firearm that killed numerous first grade students and their teachers. The chapter begins with a description of the U.S. Supreme Court’s denial of a writ of certiorari in 2019, refusing an appeal from the Connecticut Supreme Court’s finding of a valid application of PLCAA’s predicate statute exception to immunity from suit. The chapter explores the initial Sandy Hook trial litigation against firearms manufacturers in which the defendants invoked PLCAA immunity. The discussion sets forth the trial court’s grant of the defendant’s dismissal of the case, finding no applicable PLCAA exception to immunity from suit. The chapter next focuses on the Connecticut Supreme Court’s reversal of the trial court’s dismissal, effectively reviving the litigation. The analysis considers the broad implications of the U.S. Supreme Court’s refusal to hear the PLCAA appeal, as well as the precedential value of the Sandy Hook decision upholding a PLCAA predicate statute exception. The chapter concludes with a survey of post-Sandy Hook litigation seeking to exploit the inroads on firearms immunity after the Sandy Hook litigation.