I was shooting my 16s suppressed for the first time in several years and noticed that it was very gassy. I pulled the can (AAC m4-2k08) and shot it unsuppressed on the suppressed setting. It cycled fine on the suppressed setting. Then I set it to the normal setting and it felt identical. So I pulled the gas valve and noticed that the two ports appear identical in size. I did not mic the ports and I don't have pin gauges. Anyone know if the civilian SCAR gas valve has a true suppressed setting? I thought the SCAR valve was similar to the AUG, in that in order to lessen the amount of gas driving the system, it vented more gas from the gas block. After looking it over in more detail, this does not appear to be the case. It appears that the valve cents to the front and from the side of the port, and the amount of gas vented doesn't change based upon the position of the valve.
My rifle is an early import, one of the first after the "limited edition" massively overpriced first imports.