See: STICK TO ONE'S GUNS.
{v. phr.} To hold to an aim or an opinion even though people try to stop you or say you are wrong. * /People laughed at Columbus when he said the world was round. He stuck to his guns and proved he was right./ * /At first the boss would not give Jane the raise in pay she wanted, but she stood by her guns and he gave it to her./ Compare: STAND ONE'S GROUND.