Hows this gas port

[CINDERS]

Was looking for information on Fire cracking and throat wear and came across this one of a gas port that has been machined to expose the inside of the barrel I think they said M-16 she is rather sad that barrel.......
Mind you that barrel has oodles of fire cracking.....

2nd pic of some test barrels from the same page now they are really flogged out...................

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