I don't see the need to play around with quotes when you can just make a text reply. That's pretty awkward to read.
In any case, your reasoning still doesn't make sense in regards to your proposed rifle. It does not fit thematically. The other weapons you've mentioned are futuristic in design, and you're trying to suggest a World War II rifle? Come on. Our current rifle can be reloaded in a matter of seconds, fires extremely fast, and is much more accurate at long ranges than anything we have available today while still maintaining the same rate of fire, demonstrating the ability to compensate for massive amounts of recoil. The chaingun has no modern parallel, for the simple fact that you don't carry around machine guns that large in real life, let alone fire them. Then you mention the turret, for which we have no real life equivalent. The delay in firing can easily be rationalized as the time it takes to lock onto a target, considering that the turret has perfect aim and can track an alien around. In any case, we are not adding a World War II rifle.
In regards to the rocket launcher, I'm having trouble comprehending your post due to the way you've formatted it. While I do like the idea of a rocket launcher, it definitely wouldn't work in the way that you described in an earlier post. Like I mentioned at the start of the thread, don't try to come up with numbers or attempts to balance weapons that don't even exist in-game yet. It just makes your ideas come off as silly.