ATI Buds item # 75573 would be best and is only $18. But almost any 1911 45 mag will fit it though.

ATI ships their 1911 with ACT brand magazines. The ATI handguns that I have owned accept MEC-GAR mags well. Some other brands that have plastic floor plates do not want to fit in the mag well enough to allow the mag catch to latch. Most steel flat bottom floor plate mags work well in ATI 1911's as well. Hope this helps.

This is a Commander but any Government magazine will fit too.

Get the Chip McCormick 1911 mags for it, they work great. (If you found this answer helpful, please mark it as the "Best Answer". Thank you.)

Yes any 1911 full size .45acp mag should work but please be aware some individual1911s like some mags better than others so I try other brands one at a time