50-100 or so
Library, gun shop, gun shows.
Remington model 350 series k 20 ga shotgun. A very nice gun
i have a forearm for a model 49 email me to know more firstname.lastname@example.org
Bill Goforth has an excellent book on the H&R shotguns. You can do an internet search to find a copy.
Check under the forearm
@ turn of the century
100 USD or so
Hopkins & Allen