Not saying that the M16A2 was a completely different weapon but those modifications are more than just "cosmetic".
Then describe how having a groove separate fingers makes a weapon more deadly than one without. Or any of the other changes you listed.
There are different ways to use sights ?
I described how both work. They operate differently.
I've never fired an M16 or derivative.
I've fired an L1A1, L85A1 (with and without optic), L86A1
I've also fired the AK-47 (actually I think it was an AKM) and that was the superior weapon to fire even with an open sight.
OK, good for you. Not sure what is so great with the AK, I have fired them also, and was unimpressed. Of course, I look for things like recoil and accuracy. And the AK was never intended to be accurate, simply cheap.
But am still waiting for any feedback on other actions. Funny how you seem to keep ignoring that there are actions as fast or faster than semi-automatic weapons.
For instance FN added a longer, heavier barrel to the FAL - same weopon
They then added a folding bi-pod - same weapon ?
They added a full auto capability - still the same weapon ?
Yes, to answer your question, same weapon. Those are all cosmetic changes that have nothing to do with the weapon itself.
If I remove the engine from a Ford Taurus and drop in the engine from a Mercury Sable, is it still a Ford, or is it now magically a Mercury? If I take the rotary engine out of a Mazda and replace it with a piston engine from a Datsun, is it no longer a Mazda?
A heavy barrel really does very little to a weapon. Basically it is done to make a weapon more accurate at longer ranges. In other words, the 400-800 meter range or greater. Now exactly how often does this even come up?
Well, to be honest I can not think of any. In the most recent (Las Vegas), the rounds were not well aimed at all, basically fired at random into a crowd at a range of 300 meters.
And the famous "Beltway Sniper" fired at ranges from 50-100 meters.
So heavier barrel, inconsequential. Let me know when people are using heavy barrel weapons at ranges close to 1 km.
Bipod? Oh give me a break! Once again, you bring up something that is rarely used, and can literally be attached to any weapon. Yes, I have a bipod for my M16. I only use it in the field, as it lets my rifle be put down, and not have to lie on the dirt. I got it cheap, and it is good for people doing a double-take. They are primarily used on heavy weapons, like machine guns for a reason.
And full auto or semi auto does not differentiate the weapon. That is simply minor changes inside the trigger assembly.
Tell me, is a 1984 Toyota Corolla with a 3 speed automatic transmission a different car than a 1984 Toyota Corolla with a 5 speed manual transmission? And is then the 1984 Toyota Corolla with a 4 speed manual transmission yet another car altogether?
Obviously so. And a hard cover copy of Harry Potter and the Philosopher's Stone is obvious a completely different book than a paper back version of Harry Potter and the Sorcerer's Stone.
After all, they have completely different bindings, and do not even have the same title! So
obviously they are different books.
Right?