Take off the buttplate. There is a screw inside. You'll need a long screwdriver and a flashlight.
100 or so
No published sn data.
The Master Mag model CC880 was produced by Mossburg sometime in the 1970's
I recently called the Winchester historian and he said they were the same gun also a model 1200 barrel will fit.
1951
@ 1956
Mossberg
it depends on the year, and condition,of the gun!
When was the J.C. Higgins Model 101.0 12Gauge Shotgun Made
It is worth $75 to $135 depending on condition.
50-350 usd
3 dollars very expensive