CDSUSMC, Thanks for joining our forum and sharing your thoughts and pictures with us. The .25-20 barrel is an early one and hard to find. The barrel you have is for a First or Second Model Utica or a later M219 action made at Chicopee Falls. These 3 actions cock when the top lever is moved to the right. These are "striker" fired models. You will need a Utica or early Chicopee action. Starting with the M219B Chicopee Falls action, the "striker" was replaced with an internal hammer. Your barrel will not work on this action and later "C" & "D" suffix actions. It may fit, will does not have the cocking stud to engage the cocking lever on the inside of the later actions. Also, please be aware when you do purchase the early striker fired action, the barrel may drop right in, or may need to be fitted by a gunsmith or someone with machining skills. The top lever on the "B" and later suffix models will open the action by moving either to the right or to the left, but will NOT cock the hammer. I am away from home and will return Monday. As soon as I can I will post a picture of the correct action. The striker fired actions only have one pin in the receiver for the internal parts. I hope this information will be of some help to you. My book goes into great detail about the M219 and M220 actions. Best wishes, Garnett
Please look at the M219 section of this forum and select the "Engraved M219" started by me. There is a picture of a Striker fired action of the design that you will need for your early 219 barrel.