This was with some older ser# guns. I have owned several 6 or 7 and have put over 50 through one and 80k on another. I have yet to have any issues with them coming open. The only Issue I have ever had was swapping wood and having butt stock crack. But again a ton of rounds shot and a stock not fitted to gun is what happens no matter what you are shooting. They point great for the money will last forever and resale is not to bad.