Typically we check the serial numbers of the receiver, forearm, butt & butt plate. In this case, you will be lucky if 2 match.
The rec'r is about 1910, wonder what caliber it started life.
The barrel is marked Chicopee which put it late 40's or later.
The stock looks like an EG (50's) although possibly a G (20's). The lever does not fit the pistol grip.
Butt plate looks like a generic, possibly EG.
The forearm? This could be your matching number.
What model? N/A
Looks like a previous owner had a rec'r and complemented it with EG parts.
JMO