I've purchased multiple times from this site without issue.
Smith and Wesson M&P15 SPORT 2 II OPTIC READY 556/.223 NATO 16" 30RD BLK Free Shipping - COMBAT ARMORY
Smith and Wesson M&P15 SPORT 2 II OPTIC READY 556/.223 NATO 16" 30RD BLK Free Shipping - COMBAT ARMORY