Hello everyone I went to the range with my two cousins. I had my sub9 and they had a glock19 and a Berretta do not know the model think 92F. At the end of the day while they were cleaning their guns i noticed that their guide rods were made out of plastic as opposed to mine which is made of metal. Does this not matter at all or is it that those companys make their guns out of cheaper parts or what? Does it matter if the guide rod is made of plastic?