Ft. Sill
That sucks. What is the correct size of the gas port? And when did this happen? I'm sure since then they did their homework...
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This is the norm in the AR realm... not the exception. I've got a Sabre 11.5 with an .090 or some ridiculous port. And Daniel Defense wantonly produces a Mk18 clone barrel with an assed out gas port.
Over gassed ARs produced by lunatics so that mouth breathers can run dog shit ammo is the root of the vast majority of AR problems.
Correct port size should be in the .071-.073 range. This was a recent barrel used by someone from an LE agency. I'm pretty sure they didn't do their homework and there are plenty of others who also have oversized ports. I saw enough when I was there to make me steer away from them. YMMV
You could run an adjustable gas block. But any gas block worth its ass would be more valuable than the barrel at that point.
It's a tent stake.