… 56 grams and 62 grams of crack cocaine, respectively, from Thornton. On June 9, 2015, DEA and ATF used an undercover officer to purchase a .357 caliber revolver from Thornton. On June 23, 2015, a confidential source DEA … a .22 caliber pistol, both with obliterated serial numbers, from Thornton. Thornton has previous felony drug and gun …