Originally Posted by GrthWhytHype
I understand wanting to do semi and single. But unless that bolt locks during single it seems a little pointless to me. It's not helping at all. Was I mistaken when I saw the bolt jump back during single shooting? And what sort of things are you thinking about doing to combat that?
Pay very close attention to the rotating bolt and the gas operation.
With the gas turned off, there is no movement, as the bolt is rotated and locked into place. It's the gas, forcing the carrier rearward, engaging the cam pin, and thus unlocking the bolt to disengage it.
The only reason it can function in single shot this way is because the T-handle on the top and/or the external charging handle attached to the bolt carrier replace the need for the gas, making it manually operated.