If there's already a million of these [most of them involving the M-416 and G-36] why'd you post another?
IRL, the G-36 is possibly one of the most beautifully designed guns I've ever messed around with. I love the feel of the G-36K as it comes to the shoulder. The optical sight is...well it's a great gun.
Even though the HK-416 is made by H&K, I would still take the G-36 any day IRL, as it's simply a better weapons system. the M-16 variant system is just...meh. It's got a bad rap and I've never cared for it.
Of course you people are talking about ingame.
M-416 is more powerful, more accurate and has pretty much the perfect firerate for what it's doing. Any faster and you'd lose accuracy on target. The G-36 isn't a bad gun also, but for the most part, I don't use it anymore thanks to the P-90 and M-416.