Mine starts with SW, it's an M&P15T....does this mean it was made by Stag Arms? Where can I get more info on which company actually built my rifle, because I also read that certain M&P15s came with LMT BCGs?If the serial number starts with SM it was made by S&W.
Again. If your serial number starts with SM it was made by S&W.
The T models are pretty trimmed-out. Troy industries fre-float quad rail and BUASs. $975 sounds good for a rifle that lists around $1400.00Stag is the commercial company for CMT. CMT makes parts for many AR manufacturers (including Colt).
Unless it has all the trimmings, $975 is a little steep.