Hi recently joined but having problems with my Contender which I have had for many years. I replaced the hammer spring, the striker spring, the interlock, and the sear. After doing this, I am having a barrel lockup problem. Never had a lockup before. I've taken the internals apart so many times I could do it blindfolded. I feel I am missing one step but can't figure it out. Any ideas? Thanks for your input. Artron9