All mainly for either tokyo marui or we tech. The slide is Tokyo Marui (sold) The barrel is Tokyo Marui (sold) One guide rod is Tokyo Marui (sold) Shorter slide catch is Tokyo Marui (sold) Longer slide catch not sure brand (sold) One trigger is Tokyo Marui OPS-M.R.P grip is Tokyo Marui Black guide plug is Tokyo Marui Hammer is WE Tech Other guide rod is WE Tech (sold) Other grip is WE Tech Other parts are likely interchangeable except for maybe the longer slide catch. In the small bag is another mag release with two black screws. Hmu if you only want some parts and we can negotiate a deal! $80 OBO