Recent mass shootings including Charleston, SC; Chattanooga, TN; Chardon, OH; Virginia Tech in Blacksburg, VA; and San Bernardino, California, have resulted in public outcry for action. Nevertheless, the response at the state level following these events has varied significantly, with some states loosening gun restrictions and others adopting a variety of gun safety policies ranging from private-sale background checks to extreme risk protection orders. Why has the state-level response varied so significantly? In exploring this question, this chapter examines the influence of state-level factors on current gun control legislation. This chapter explores the level of legislative action concerning the update and/or pass new laws for the years, 2009 through 2017. Pooled cross-sectional time series data that controls for variation between states and over time is used.