I just bought a single six from a buddy and it has no half cock do ya'll know if any single sixs were made with out the half cock ? I thought it was broke , but I heard that some ruger .22s were made with no half cock . It shoots fine but when you load it you have to hold the hammer back with your thumb. It's a single 6 new model. Also my FIL has an old one that doesn't have the transfer bar are these worth more ?