I dont have much ammo but just got my taxes back, I want to buy some ammo but not sure which would be more important to have more of. I need ammo for my AR-15 and my Glock 23. Which one should i buy about 500-1000 rounds for? I currently have about 700 rounds for the AR-15 and 50 rounds for my glock 23. I know i need more ammo for the G23 but what should i buy the bulk of it for? Thanks.