Mags pretty dang good, except one thing.
I ordered 4 of these mags when the price was cheaper, right now, this is still a steal though. Two of the mags work wonderful held the bolt back and everything. The other two cycled fine but the follower would not hold the bolt back after the last shot. I guess just count your shots. No big deal for me. Still great solid mags, love the Teflon finish!