It definitely works! - Bootleg Inc AR-15 Four Position Adjustable Carrier

i had an over gassed AR15, ejecting brass at the 1:30-2:00 range, also had quite the thump. I switched to this BCG, it wouldn’t eject on the second setting so switched to the first (U) setting, and wow, shoots like a dream, ejecting at 4:00 and definitely not as loud! Even a guy a couple of bats over asked what I changed, he heard it immediately! I live in a state where suppressors aren’t gonna happen,(yet) so not sure of that functionality of this bcg. I assume it will work perfect for people that switch between using one and not.