Model Variants (Including Prototypes)
HK416 - Base Designation; produced in four variants differing in barrel lengths.
HK417 - Larger version of the base HK416; chambered for 7.62x51mm NATO cartridge.
D10RS - 10.4 inch barrel
D14.5RS - 14.5 inch barrel
D16.5RS - 16.5 inch barrel
D20RS - 19.9 inch barrel
MR223 - Civilian Variant of the HK416; semi-automatic fire.
MR308 - Civilian Variant of the HK417; semi-automatic fire.
MR556 - American Market Designation of the MR223.
MR762 - American Market Designation of the MR308.
Mehmetcik-1 - Turkish locally-produced version of the HK416.