
Originally Posted by
jwfuhrman
Steyrman and IraqGunz -
Have tried different lowers(that had different buffers)
Just tried replacing the gas tube. It seemed to fix some of the problems. Now the NATO pressure stuff cycles fine but does not lock back on empty(4 different mags used to test) but the weaker 223 stuff, which I don't expect much from to begin with, still makes it a bolt action.
MT Dawg -
Barrel is dimpled, when you tighten the screw down into the dimple it self centers and leaves a gap.
Seems the gas tube was part of the problem. I can't even run water through it.....
Gas port is at .077, which seems slightly under sized. I think I read on here some where that 14.5 Mid gas ports are usually .080-.085?
I'm wondering if the gas port is properly aligned with the block. Think the dimple itself might be a little off?
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