The Smith & Wesson M&P15 in 300 Whisper was an interesting rifle released in 2011. At a time when many manufacturers were embracing the 300 BLK cartridge, S&W went with the 300 Whisper.
As it turns out, it was a good choice, but one that doesn’t appear to have been financially successful.
Let’s jump into what the M&P 300 Whisper rifle was all about.