Weapon X was repainted in 1992 with red cables, as well as other differences, and sold as a Kay-Bee exclusive. The first release of this figure had the 1992 card back, an X-Men Series II trading card, and a Kay-Bee exclusive sticker. Later versions did not have the sticker and had the 1993 card back. Below is a picture:

Weapon X was also repainted in 1993 with siver cords, among other differences. Below is a picture of this hard to find variation: