I'm considering the purchase of the LMT Enhanced BCG to upgrade the stock BCG on a Colt SOCOM - 14" barrel, etc. But I was confused by the option of choosing a full auto over a Semi? I should mention that I am planning on a suppressor for it and wondering if that makes any difference or would impact my choice.

More generally, let me also ask if a LMT Enhanced BCG is a wise move to assure additional reliability of the M4?

Thanks.