I agree. Ignorance is dangerous. It's also cureable.
USMC/ARMY FM 3-22.9
Pay attention to figure 4-6. The one labeled "firing". That section of the manual should solve your confusion on the cycle of operations for the M16x (AR-x).
That picture and description illustrate exactly why any compensator, or supressor will never reduce any actual recoil. Specifically the part about the weapon cycling before the round exits the muzzle. The Army and Marine Corps have to date spent literally millions to make these things work correctly. So I appreciate everything you've read and all, but I'm going to go with what's in the manual that trains hundreds of thousands of US and foreign military service members every day since the weapn's implementation.
If you're still determined to prove me wrong, feel free to put a digital pressure scale behind the buttstock of any AR/M16 and record on video what the scale reads with and without a compensator using the same ammunition.
Other than that I wish you the best of luck with all of those weapons I've never read about or shot or whatever.
This is a link to a copy of that manual.
http://www.globalsecurity.org/military/library/policy/army/fm/3-22-9/c04.htm#4_2
Actually that is not what it says.
"d. Firing (Figure 4-6). With a round in the chamber, the hammer cocked, and the selector on SEMI, the firer squeezes the trigger. The trigger rotates on the trigger pin, depressing the nose of the trigger, and disengaging the notch on the bottom of the hammer. The hammer spring drives the hammer forward. The hammer strikes the head of the firing pin, driving the firing pin through the bolt into the primer of the round. When the primer is struck by the firing pin, it ignites and causes the powder in the cartridge to ignite. The gas generated by the rapid burning of the powder forces the projectile from the cartridge and propels it through the barrel. After the projectile has passed the gas port (located on the upper surface of the barrel under the front sight, Figure 4-5) and before it leaves the barrel, some gas enters the gas port and moves into the gas tube. The gas tube directs the gas into the bolt carrier. It passes through the key downward into a space between the rear of the carrier's bolt cavity and the rear of the bolt itself. The gas then expands. The bolt is locked into the barrel extension and unable to move forward, and the carrier is thus forced to the rear by the expanding gas."
It does not say that the action unlocks while bullet is still in barrel.
Again, read what a barrel manufacturer says:
http://www.ar15barrels.com/prod/operation.shtml