Texas Rangers, Department of Public Safety, Branch Davidian Evidence, Investigative Report No. 1, September 1999; Investigative Report No. 2, January 2000 (PDFs available at Texas Rangers website). The Rangers found that the FBI used grenade launchers to fire two 40 mm M651 grenades. The Army considers the M651 a pyrotechnic device and that it is known to cause fires. The Army Tech Manual for the M651 warns that it can penetrate 3/4" plywood at 200 meters and "projectile may explode upon target impact." During inventory of the Waco evidence the Texas Rangers also found flashbang grenades.
