I contacted SLR rifleworks asking if they have a compatible adjustable gas block for the M&P 10 and they replied that their Sentry 7 is compatible with the M&P 10 which requires a .750 gas block.
IMG_9006 by hd_rolling, on Flickr
IMG_9005 by hd_rolling, on Flickr
IMG_9004 by hd_rolling, on Flickr