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M416 usually refers to the HK416, a German-designed assault rifle developed by Heckler & Koch.
- Type: Assault rifle
- Caliber: 5.56×45mm NATO
- Operating system: Gas-operated, short-stroke piston
- Origin: Germany
- Manufacturer: Heckler & Koch
- Related to: AR-15/M16 family design, with a modified operating system
- Known for: Reliability and use by military and special forces
In games such as PUBG, “M416” is a popular name for the in-game version of the HK416.