Originally Posted by boogiebot
can all gun be bought in parts, eg upper and lower receivers. and then be built from the ground up? I know that you can mod a gun like crazy; but what about just taking random parts from various manufacturers and slap something together?
Depends what your building, take note that not everything is compatible. Also not the cheapest solution, unless you have a bunch of parts lying around that you'd like to make use of. Or you could just buy one of those drop in gearboxes.