Iirc that’s actually the premise of how a lot of guns in Mass Effect work. A mass effect field is induced with Element Zero (unobtanium plot device) which allows you to alter the apparent mass of things inside the field and then, using essentially a grain of sand shaved off a block as a projectile, said projectile is accelerated to relativistic speeds in place of a bullet.
Iirc that’s actually the premise of how a lot of guns in Mass Effect work. A mass effect field is induced with Element Zero (unobtanium plot device) which allows you to alter the apparent mass of things inside the field and then, using essentially a grain of sand shaved off a block as a projectile, said projectile is accelerated to relativistic speeds in place of a bullet.