Impossible to install, useless - TANDEMKROSS Shock Block Bolt Buffer, Ruger 10/22

This is a somewhat flexible hard rubber rod. One can drive out the factory steel rod and try to install this one. It goes in one side, but it won't come out the other side. The tip trying to come out the other side of the receiver gets caught on the inside of the receiver and cannot get through the hole. The rubber rod then proceeds to mushroom on the inside of the receiver as it attempts to exit the hole on the far side. No matter how I pound on it or drive it or beat on it I cannot get the rod through the far side of the receiver. Worthless piece of junk.