Am looking for something sub 600$ total
Like asking others what girl to date. What is your intended use, which may narrow it down by hundreds of choices? You looking used or new? You can get a better quality 1911 used, instead of a lesser gun new, which WILL BE USED as soon as you buy it. Since you have a long gun, do you want a compact or micro? Wheel gun or semi-auto? A used AR or shotgun? I cannot recommend a solution to an open ended question, that would be silly of me.
Let me ask you, how long is a piece of string?