I had a handful issued to me in Afghanistan, never had a problem with them. I’ve loved them ever since.I think Okay has to be making those for Brownells. The gray are exactly like GI mags. The Brownells disappeared for a short while right around when Okay announced they weren't making mags anymore. I think maybe they worked out a deal or Brownells invested and bought the Okay tooling or something. Just me speculating...at any rate, they are identical to GI mags. I bought one of the 100 pc cases for testing and they all run like a top. Can't beat 'em.