We do it but how care the criminal Syrian regime do it

"The practice of manufacturing and surreptitiously distributing tampered military equipment that explodes at unexpected times has a long history, but it is not often publicly documented as it happens. The British and German militaries used the tactic in World War II, and the United States developed exploding Kalashnikov ammunition in the 1960s and leaked it to South Vietnamese guerrillas and North Vietnamese soldiers."  But the story is fully documented:  "as well as an examination of shattered rifles and the contents of a booby-trapped cartridge..." So the correspondent examined the shattered rifles and determined that they were booby-trapped?  (thanks Electronic Ali)