OK
I'll start with some measurements of my older non collared insert. overall length is 44 3/4", OD of the tube is 2 1/4". Its 9 11/16" from the end of the ears to the center of the first hole ( see pic ). So if the newer (factory) collared insert have these same measurements than I would think that it'll work with possible trimming down outer tube like Doghead suggested to make up for collar length so the first hole aligns.
![100_6526.jpg 100_6526.jpg](https://www.steelsoldiers.com/data/attachments/369/369543-5ac5d684be250f7b43d3dbb104356682.jpg)
I'll start with some measurements of my older non collared insert. overall length is 44 3/4", OD of the tube is 2 1/4". Its 9 11/16" from the end of the ears to the center of the first hole ( see pic ). So if the newer (factory) collared insert have these same measurements than I would think that it'll work with possible trimming down outer tube like Doghead suggested to make up for collar length so the first hole aligns.
![100_6526.jpg 100_6526.jpg](https://www.steelsoldiers.com/data/attachments/369/369543-5ac5d684be250f7b43d3dbb104356682.jpg)