Keep 'tuning' with buffers.
It doesn't matter like you think it does.
Most every AR in use in the entire world's military and police use an H or H2 buffer in everything from 10.3-20" barrels, suppressed, unsuppressed, M193-M855A1, semi, 3 round burst, and full auto.
But some guys on M4C have to tune up their A5 buffers with their own mix of steel and tungsten weights and special springs to get optimal reliability from their carbines?
Puh-leese.
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