$100-$175, depending on condition.
The model 5100 Stevens shotgun has a plastic stock
1950
1940's
According to the Blue Book, all Model 94's were made from 1926 to 1945.
That may be tough since the tenile plastic stocks tended to break and there have been no aftermarket replacements. Try Gunparts Corp or Jack First.
Boyd's stocks on the net.
Your Stevens model 240 was made from 1940-1945.
able firearms on the web
1952
model 94B Stevens plastic stock was mfg in 1950. Stevens uded letter code starting with A in 1949 until P in 1969.
Try e-gunparts.com
it's probably a model 5100. the tenite (plastic stock and forend) as it was called was likely made sometime around wwII, because of a shortage of wood built gunstocks and forends