Mossberg 500 “Shockwave” PGO Build
This guide details the modification of a Mossberg 500 into a Shockwave PGO firearm. It covers essential components like the 14-inch barrel, Shockwave Raptor grip, and custom MOE handguard with a 3D-printed loop. The instructions emphasize legal classification based on overall length and the absence of a shoulder stock, drawing on expert knowledge of ATF regulations.











