Supposedly the 43x and 48 are offered overseas with rails, unless it was fake news.
I have one of each. I bought the 48 lightly used and it had a minor issue with the mag catch, it was deformed and would catch on frame. I bent it a bit and it seems work. I bought 2 of the SDI 15rd mags and they have been 100% for about 100 rounds each. I replaced the 43x mag catch with a Hyve? from Epay and it is a nice piece. The SDI catch was out of stock, it was my first choice. I and my friend that was with me tended to shoot both examples left for some reason.
I plan to put it on paper and see what I get soon.