Okay so on the last round of my magazine, my bolt does not lock back. This is weird because whenever I manually pull the charging handle back on an empty magazine, it locks back just fine. Could my gas block not be aligned properly? Also, i am using a standard carbine buffer and my rifle has a mid length gas system. I just recently went from a spikes T2 buffer to the carbine buffer and I notice that my rifle is cycling noticeably faster. Can the rifle be cycling too fast for the bolt to lock up on the last round? I feel like there are many possibilities to why it is doing this but I just want my rifle to work the way it should. Thank you.
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