I have found everything from the butt plate with the V emblem to the barrel at Numrich.
http://www.e-gunparts.com/dept.asp
High Standard, some parts available at Numrich
I have parts for that model. sales@countrygunsmith.net
$125 or so
Try e-gunparts.com
The semi-auto and full auto AK-47s have different designs. Not only does the full auto have different parts, but those parts cannot fit in the semi-auto only version of the AK-47. It is against US law to have a semi-auto that can be "readily converted" to full auto.
High Standard made the Model 75 for Sears. http://www.histandard.info/PDF/Sears%20Shotguns.pdf
The Sears Ted Williams Model 300, semi-auto, shotguns were made by Winchester. The Sears 300 is the same as the Winchester Model 1400.
High Stadanrd http://www.histandard.info/PDF/Sears%20Shotguns.pdf
For all intents and purposes, yes it is. Nearly every part is interchangeable. The Sears guns do not hold the same value, though.
Which make & model??
gunpartscorp. com
The sears model 6c-22 was made Winchester/ same as Winchester model#490