a link to a rail system for a bull barrel would be GREAT.. can't seem to find one, i've even googled it.. don't really need a quad rail i don't think.. anything more than a light and vertical grip.. maybe a laser.. is worthless to me.. i don't need all the un necessary stuff.. i'm using it for patrol and executive protection, as simple as possible isa GREAT thing if you ever get shot at/need to shoot at a target that walks talks and has a family....