
Originally Posted by
markm
I disagree. I mean.... I run my can on a Bushmaster for Pete's sake. That is a big port. Just bump up the buffer to H2 or H3.
Have you run it without lubrication, for extended periods of time?
I have, both suppressed, and unsuppressed. This port size works well for me with 5.56mm pressure ammo.

Originally Posted by
scottryan
If he cuts the barrel, the gas port is no longer spec for that length of barrel.
There is no gas port specification for suppressor use. For unsuppressed use though, I gotcha. But there are middle-grounds. Like for a suppressed gun where the suppressor will NEVER come off it'd be something like .048'' or .050'' or something super tiny. The gun wouldn't even cycle unsuppressed. .056/.060'' or more, will cycle unsuppressed, and will be reliable.

Originally Posted by
Todd.K
Rifles with suppressed only gas ports should not be considered reliable without the silencer.
Agreed. That's why mine is slightly bigger. I subscribed to Grant's train of thought, and built my guns based on his theories, and findings. After he did them first. I trusted his decisions, and the overall builds have worked for me.
VLTOR A5 will make the bolt lock back unsuppressed. Just a footnote, btw.

Originally Posted by
scottryan
The gas port should be sized for mil spec ammo unsuppressed. That way it insures reliable functioning when the gun is dirty.
That's if the gun will be shot primarily unsuppressed. Mine is ported for (close to) milspec ammo suppressed. Actually it's ported slightly larger than that.
Hope the replies make sense. I was in a hurry.
Last edited by Magic_Salad0892; 08-31-11 at 05:25.
We miss you, AC.
We miss you, ToddG.
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