Three Days Grace’s Barry Stock Plays His Favorite Riffs In this episode of Gear Factor, Three Days Grace guitarist Barry Stock plays his favorite riffs from childhood through new music today. Continue reading… Related Posts:Gary Holt Plays His Favorite Black Sabbath RiffsHoobastank's Dan Estrin Plays His Favorite RiffsPepper Keenan (Corrosion of Conformity, Down) -…Chris Wiseman (Shadow of Intent, Currents) Plays…Badflower's Josh Katz Plays His Favorite RiffsHatebreed's Wayne Lozinak Plays His Favorite RiffsSee also 'Hardest Part' of Being a Guns N' Roses Fan, According to Fans