I would cancel the order if you can until they work the bugs out. The stock has some major problems like not kocking open. Go on XCR forums and you will see. Man, RA really has a bad habit of releasing unproven products and using their customers as beta testers dont they. I have been thinking about an XCR for a while but, its hard to go with them when they consistantly make boneheaded mistakes and screw their customers over. Like really, who would design a stock for a gun designed for tactical operations and LE/MIL and not make it lock open and closed? Never mind that, who would not make it lock open anyway on any gun? It was designed for a rifle that shoots 7.62Nato too. I really think Alex Robinson had better get his companies act together or I think they will fail. After all, people will only be used as beta testers for so long before they just go with a company that sells things that are properly tested and work the first time. Their rep gets worse every day.