Hi everyone, i just got one of these Auto Ordnance babies yesterday! You can get aftermarket mags 5/30 5/15 ones from ellewood epps and i believe marstar sells them too. I have fired about a hundred rounds through it, and found that the one 5/15 repro mag i got to cause feeding problems and the USG1 5/15 one to work fine, also i have a repro 5/30 round mag that works the best. in regards to mags with these new rifles its hit or miss. remember these are brand new carbines, expect problems at first. my carbine is starting to work and function better with more ammo fired through her.