A sniper from the elite British Special Air Service (SAS) killed a commander of the Islamic State terrorist organization in spectacular fashion using a weapon made in Israel, the UK’s Express reported on Monday.

The sniper, operating in northern Syria, hit his target on the first shot using a Dan .338 rifle. He fired at the ISIS leader during an outdoor drill that involved teaching about 20 new recruits how to decapitate prisoners. Military sources said the ISIS commander was demonstrating a cutting motion with his arm when he was hit with the bullet, which was fired from three quarters of a mile away. The rifle is so high-powered that its bullet decapitated the ISIS terrorist, who was over six feet tall, according to the Express.

“One minute he was standing there and the next his head had exploded,” said a military official who witnessed the attack. “The commander remained standing upright for a couple of seconds before collapsing and that’s when panic set in. We later heard most of the recruits deserted. We got rid of 21 terrorists with one bullet.”

The rifle was equipped with a noise suppressor that minimized the flash and sound from the shot, so the SAS sniper remained undetected. The shooter was accompanied on his mission by more than a dozen SAS soldiers who were able to sneak into a jihadi compound before the shot was fired, according to the International Business Times.

Israel Weapon Industries unveiled the bolt action sniper rifle in 2014 and developed the weapon in cooperation with Israel Defense Forces special operations units.