I was always under impression that original, German MP5 10/40 mags should fit Vector clones. I recently purchased V89-40 pistol from them and, since it came with only one mag, I called them hoping to order another one. But, I was told that these currently not available. I, then asked if German, original mags would fit, fully expecting "yes" answer. I was told without hesitation that "no", these would not fit. My jaw dropped and I just said thanks. Now, I am kind of wondering. Should they fit? Thank you for your feedbacks.