I have 5 act-mags from Derya that I’ve been running on my DY9z, they work perfect. I was told that they would work in the 43x. If you do not know the Act-Mag is 15rds, all metal and made in Italy by NewMec. They make the mags for my Berettas. I will say that the Act-Mag fits perfectly and functions without issues. I do have ramjet Magwell and this does not interfere with the fitment or the release. The mag drop right out. The Derya Act-Mag looks great and not that expensive. Once these catch on they will to sell out at first. Certain worth consideration.
Now the downside, the mag release on the 43x is plastic. This will cause wear on the mag release from the metal Act Mag that may cause issues with the stock 43x mag. The fix for this would be to consider a metal mag release which I think I saw in the Derya US website. The other difference is the base plate button release is different and in a different place. What I would be interested to know is can I can take out the Derya Act-mag base plate and replace it with a +2 extension plate?
Curious what you think about Derya Act Mag with Glock 43x.