And if so, how short before the gas system no longer works?
16" complete uppers are cheap and plentiful. Harder to find dedicated 10.5" or 12" barreled uppers as cheap. As well, don't know if the cut/thread/crown cost would cancel out any savings.
16" complete uppers are cheap and plentiful. Harder to find dedicated 10.5" or 12" barreled uppers as cheap. As well, don't know if the cut/thread/crown cost would cancel out any savings.