Save you money. they do not work. - FAB Defense AR-15 Platforms Gen 2 5.56x45mm NATO, 30 Rounds Polymer Magazine

I have Multiple AR-15s. These do not work in any of them. I am currently trying to figure out what it is that gets hung up, but the bolt will not drop when rounds are loaded in the mag. Its a shame though because the mags look nice and seem well built except for the part where they dont work.