I've seen the O-rings cause this issue. They are only needed on pistol length and CAR length gas guns. Helps with many piston ARs too.
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I've seen the O-rings cause this issue. They are only needed on pistol length and CAR length gas guns. Helps with many piston ARs too.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
There was reciently a thread on TOS about cold weather and 0-ring use. It was causing problems as well and was also a BCM BCG. After seeing this issue I noticed that AAC is using a "new" green o-ring in there uppers that RSilvers stated was supposed to have been tested down to -60.
Not sure that is the problem, and I am in no way an ARsmith. Just passing on some hopefully relevant info.
You can never make anyting idiot-proof, whenever you get close they just build a better idiot.
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