action army vsr10 one piece recieverThe VSR 10 receiver is one piece and is made of aluminum and has reinforced screw threads for the trigger which can be replaced if you screw them over. The receiver also has 2 centering rings, the rings are made of plastic and can also be replaced. The centering rings are designed to keep the cylinder centered on the receiver so that the cylinder is not pulled out of alignment when loading. The receiver is of really good quality.