Vintage 69-72 likely. Puglisi guns in Duluth MN was the first importer (way-back-when)
Is the bottom barrel stamped TM1 or Comp1?Anyone ever see a TM1 barrel like this?
The top barrel is a 4XXX serial # range with step rib and standard forarm latch like any of the TM1s I've owned.
The bottom has a rib very similar to the MX3/ MX8 ramp rib models and the forarm latch is similar to a MX type 3 series gun. Serial # on this gun is the earliest I've seen at 1XX.
View attachment 1758351
Mine is the same way. The barrel, forend and receiver are all the same serial number and no newer pieces parts will interchange.You old barrel is from a prototype very early TM gun.I have s/n 73, one of 5 guns proposed for adaption in 1969.
The barrel lug is just like the one pictured, but this barrel will not fit later TM guns, receiver end is slightly different, and it does not have the push button FE release.