I have one BCG that I used for about 5 years shooting service matches & then another 15 years shooting 3 gun. I stopped using it about 3 years ago when I replaced it with a NiB BCG. I relegated it to my used parts bin. The springs, extractor & gas rings had never been replaced. I fished the old BCG out of the parts bin & did the carrier weight test on it. To my chagrin, the carrier slid down the bolt. No telling how long I used that AR with worn gas rings!
While I was at it, I checked the ejector spring also. It was about 1/8" shorter than the spring in a barely used bolt. I replaced the gas rings & the extractor spring & ordered a new ejector spring. Didn't replace the extractor... still looked great.
I keep learning more about ARs by hanging around here. Thanks everyone for your knowledge & wisdom.
While I was at it, I checked the ejector spring also. It was about 1/8" shorter than the spring in a barely used bolt. I replaced the gas rings & the extractor spring & ordered a new ejector spring. Didn't replace the extractor... still looked great.
I keep learning more about ARs by hanging around here. Thanks everyone for your knowledge & wisdom.
I refuse to be victimized by notions of virtuous behavior.