This is the new push lock breech plug assembly with all components, ready for firing. It has the ability to hold the shock tube without an insert, straight fitting or ferrule nut. The push lock fitting can be released by the operator by pushing on a release ring on the fitting. No more replacement ferrule nuts. Hundreds of shots can be fired without replacing the push lock fitting. The push lock fitting can be changed to a size for .125, 4mm or the new mini tube.