Heckler & Koch specifically designed its HK416 to meet the demands of America’s elite armed forces. Development began sometime in the 1990s, and in 2004, it replaced the M4s carried by Delta Force.

The primary firearms of choice for Delta Force include assault rifles, sniper rifles, and submachine guns. The HK 416 , developed by German firm Heckler & Koch, is one such firearm.

Although loadouts vary per unit, team, and individual, this is what a Delta Force five-man team might carry for a direct action mission: HK416 rifles with a total of 1,500 rounds, Glock 17 or 21 ...

Sources say the HK416 rifle was used to kill bin Laden. The biggest secret in the special operations community—what gun did SEALs from "DevGru" kill Osama bin Laden with—has been revealed.

KSK and KSM, which serve similar roles to Delta Force and the Navy’s top-tier DEVGRU unit, will receive a more ergonomic take on the 416 in the A7 variant.