The polymer we are employing is the same as what Magpul uses, however we are having "glass" added to the mix in order to further strengthen the finished product.
Please do not ask me more on this as I really do not know exactly what the plastics experts are adding to the mix other than seeing the difference in the polymer. The "glass" adds significant rigidity and durability to the finished product, which will enhance how they work as well as how long their service life is. The additional cost of this is marginal, so to have the very best product we can have asked for this option.
This sounds very promising!! Thanks!