The 13-month-old’s dad, Adam Joseph Montoya, 27, is accused of fatally shooting the baby with an AR-15 rifle in front of her mom, prosecutors said in a Feb. 24 Facebook post. On Feb. 11 ...

a loaded handgun and a loaded AR-15 "ghost gun," which are often assembled from kits purchased online or 3D-printed. They don't require the typical background checks for purchase and do not have ...