There are several models with the swing (top) lever release, all built early, they switched to the push button style (side lever) starting in 1959. Some may be compatible, I have an M1908 made in the early '20s, barrel won't lock (without modification) on any of the 50-60 modern frames I've had, the underlug locking shelf is shaped different than the later shelf due to the self adjusting catch on later frames, the old frames have a catch that moves in and out of the locking shelf fore and aft, the catch on later frames swings in an arc.
Tim