It has seen service in Iraq and Afghanistan.
Suppressors can be mounted to the HK416.
well the hk416 is just as durable as the ak47 because of the new gas system also hk416 is basically really accurate and has the rate of 900 rounds per mintue also its a delta force weapon. so hk416, but it depends on the skill of the person using it
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No. The HK417 is chambered for the much larger 7.62x51 cartridges, and the upper receiver will be too long to be fitted to a 5.56x45 HK416 lower.
yes
The HK416 is manufactured by Heckle & Koch GmBH, and is only fielded by some special operations units for the sake of trials. However, the US military announced that it will not be fielding the HK416 as a standard issue item, and several units which had been issued them (such as the Asymmetrical Warfare Group) have had to turn theirs in. The FN SCAR will be fielded by Special Operations units, rather than the HK416.
A limited number are in use with select units, but it will not be replacing the M4 and M16 in line units.
I highly recommend the M4 or the M16. They have great accuracy, and they don't jam. Also, the HK416 is a good choice.
Both the M16 and the M4 version of it are in caliber 5.56mm x 45mm. Likewise, the Heckler & Koch HK416 - which may be what you meant to refer to - is also is 5.56x45.