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Gas Port Size for 12" unsupressed barrels?
#9
I took it all apart after running a total of 13 rds thru it. Every single load mag after taking the gas block off and checking to make sure it was centered would lock on the BCG and not the bolt face. it would eject the round a 3 o'clock. It would not cycle enough to strip the next round off on double mag loads. All was with Wolf ammo. it might cycle something else, but why try. I took it apart and did a rough check of the port size, by drill bit. The size looks to be around .073 ish. .078 would not go in.
The port markings show the gas port and gas block were perfectly aligned. No dragging on the BCG or the CH. Action feels smooth. My 12" PSA has no problems cycling Wolf ammo same batch of ammo.
LRRP... I'm running a standard CAR buffer and spring. Checked that also.
gas tube is Brownells standard CAR buffer tube. Gas block is a slide on LP. It didn't show any signs of leakage of gas when I disassembled it.
fit of the gas block is snug. I have to work it on and off. lock down is good. BCG is a Toolcraft NiB properly staked and no signs of leakage there.
hmmmm. I have no where to look other than the gas port size.
:confused:
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Gas Port Size for 12" unsupressed barrels? - by sharpshooter33 - 11-18-2019, 11:23 PM

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